Mining intrinsic safety type power supply sealing structure

Abstract

The utility model discloses a mining intrinsic safety type power supply sealing structure, which comprises a fixing plate and a pressing plate, and is characterized in that the fixing plate is fixed on the side wall of a power supply shell, and an avoiding hole for exposing a female plug on the power supply shell to the outside is formed in the fixing plate; the pressing plate is arranged on the external wire in a sleeving manner, and is clamped on the fixing plate through a clamping assembly; according to the utility model, the external wire passes through the center of the pressing plate, the male plug at the end part of the wire is aligned to the direction of the female plug, the pressing plate is clamped on the fixing plate through the clamping assembly, and the male plug of the wire is inserted into the power supply female plug to realize electrical conduction, so that the safety of explosion-proof electrical connection is ensured; and the waterproof, dustproof and moistureproof requirements of the harsh environment of the underground coal mine are met.

Description

Technical Field

[0001] This utility model relates to an intrinsically safe power supply sealing structure for mining applications, belonging to the field of power supply sealing technology. Background Technology

[0002] In special working environments such as underground coal mines, the sealing and connection reliability of electrical equipment are directly related to safe production. Traditional mine power supply sealing structures generally have the following technical defects: the wire connection ends lack effective guiding and positioning, and the male and female plugs are prone to loose connections or pin damage due to axial deviation when mating; the fixing method mostly adopts full bolt fastening, which is inefficient and not conducive to rapid maintenance underground. Therefore, an intrinsically safe power supply sealing structure for mining is proposed. Utility Model Content

[0003] To address the aforementioned technical deficiencies, the purpose of this utility model is to provide an intrinsically safe power supply sealing structure for mining applications, which ensures the safety of explosion-proof electrical connections while meeting the waterproof, dustproof, and moisture-proof requirements of the harsh underground coal mine environment.

[0004] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: This utility model provides a sealing structure for an intrinsically safe power supply used in mining, comprising:

[0005] A fixing plate is fixed to the side wall of the power supply housing, and the fixing plate has a clearance hole to expose the female plug on the power supply housing to the outside.

[0006] A pressure plate, which is sleeved on an external wire and is snapped onto a fixed plate by a snap-fit ​​assembly;

[0007] When the pressure plate is snapped onto the fixed plate, the male plug on the external wire is inserted into the female plug on the power supply casing, and at the same time, the pressure plate seals the clearance hole.

[0008] Preferably, the snap-fit ​​assembly includes:

[0009] Two upright blocks are symmetrically fixed on both sides of the fixing plate, and slots are provided on the side walls of both upright blocks;

[0010] Two elastic plates are disposed on both sides of the pressure plate. The elastic plates are U-shaped, with one end connected to the pressure plate and the other end provided with a locking block for engaging with the locking slot.

[0011] Preferably, the pressure plate has an insertion groove, one end of the elastic sheet is inserted into the insertion groove, and the pressure plate is provided with a plurality of first bolts for fixing the end of the elastic sheet into the insertion groove.

[0012] Preferably, a guide groove is provided on the side wall of the upright block, and a guide block is provided on the pressure plate, the guide block being slidably connected inside the guide groove.

[0013] Preferably, the connection between the guide block and the pressure plate is provided with a corner block to enhance the connection strength.

[0014] Preferably, the sidewall of the elastic sheet is provided with anti-slip texture.

[0015] Preferably, the fixing plate is provided with a first sealing gasket on the side near the power supply housing to seal the connection between the fixing plate and the power supply housing.

[0016] Preferably, a second sealing gasket is provided on the side of the fixing plate away from the power supply housing to seal the connection between the fixing plate and the pressure plate.

[0017] Preferably, the pressure plate has a socket hole at its center for connecting external wires, and the socket hole is provided with multiple sealing rings.

[0018] Preferably, the fixing plate is fixedly connected to the power supply housing by a second bolt.

[0019] Compared with existing technologies:

[0020] 1. This utility model achieves electrical conduction by passing an external wire through the center of the pressure plate and aligning the male plug at the end of the wire with the female plug. At the same time, the pressure plate is snapped onto the fixed plate by a snap-fit ​​assembly. The male plug of the wire is inserted into the female plug of the power supply to achieve electrical conduction. This not only ensures the safety of the explosion-proof electrical connection, but also meets the waterproof, dustproof, and moisture-proof requirements of the harsh environment in underground coal mines.

[0021] 2. This utility model uses a locking block to engage with a slot. The deformation and restoring force of the elastic sheet causes the locking block to self-lock against the slot wall. At this time, the sealing surface of the pressure plate completely covers the clearance hole. Simultaneously, the male plug of the external wire is accurately inserted into the female plug under the guidance of the pressure plate. When disassembling, the operation is reversed. Pressing the elastic sheet can release the self-locking state, thus facilitating the assembly and disassembly of the male and female plugs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram showing the separation state of the pressure plate and the fixing plate of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the fixing plate, the clearance hole and the first sealing gasket of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the pressure plate of this utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the pressure plate, the sleeve hole and the sealing ring of this utility model;

[0027] Figure 6 This is an exploded view of the pressure plate and elastic sheet of this utility model.

[0028] In the picture:

[0029] 1. Fixing plate, 101. Clearance hole;

[0030] 2. Pressure plate;

[0031] 201. Insertion slot; 202. Guide block; 203. Corner block; 204. Socket hole;

[0032] 3. Snap-fit ​​assembly;

[0033] 301, upright block; 3011, guide groove; 302, slot; 303, elastic sheet; 304, locking block;

[0034] 4. First bolt;

[0035] 5. First sealing gasket; 6. Second sealing gasket; 7. Sealing ring;

[0036] 8. Second bolt. Detailed Implementation

[0037] The present invention is illustrated below with specific embodiments, but these are not intended to limit the scope of the invention.

[0038] Example 1

[0039] like Figures 1-6 As shown in this embodiment, a sealing structure for an intrinsically safe power supply for mining applications is provided, comprising: a fixing plate 1 and a pressure plate 2. The fixing plate 1 is fixedly connected to the side wall of the power supply housing by a second bolt 8. The fixing plate 1 has a clearance hole 101 that exposes the female plug on the power supply housing to the outside. The pressure plate 2 is sleeved on the external wire and is snapped onto the fixing plate 1 by a snap-fit ​​assembly 3. When the pressure plate 2 is snapped onto the fixing plate 1, the male plug on the external wire is inserted into the female plug on the power supply housing, and at the same time, the pressure plate 2 seals the clearance hole 101.

[0040] During installation, first securely fasten the fixing plate 1 to the side wall of the power supply casing using the second bolt 8, ensuring that the clearance hole 101 is aligned with the female plug. The operator then passes the external wire through the center of the pressure plate 2, aligning the male plug at the end of the wire with the direction of the female plug. Simultaneously, the pressure plate 2 is secured to the fixing plate 1 via the snap-fit ​​assembly 3. Inserting the male plug of the wire into the power supply female plug establishes electrical continuity, ensuring the safety of the explosion-proof electrical connection while meeting the waterproof, dustproof, and moisture-proof requirements of the harsh environment in underground coal mines.

[0041] Example 2

[0042] like Figure 1 , Figure 2 as well as Figures 4-6 As shown, based on Embodiment 1, in this embodiment, the snap-fit ​​assembly 3 includes two upright blocks 301 and two elastic pieces 303. The two upright blocks 301 are symmetrically fixed on both sides of the fixing plate 1, and each of the two upright blocks 301 has a snap-fit ​​groove 302 on its side wall. The two elastic pieces 303 are disposed on both sides of the pressure plate 2. The elastic pieces 303 are U-shaped, and the side walls of the elastic pieces 303 are provided with anti-slip textures. One end of the elastic piece 303 is connected to the pressure plate 2, and the other end of the elastic piece 303 is provided with a snap-fit ​​block 304 for engaging with the snap-fit ​​groove 302.

[0043] The pressure plate 2 has an insertion groove 201, one end of the elastic piece 303 is inserted into the insertion groove 201, and the pressure plate 2 is provided with a plurality of first bolts 4 for fixing the end of the elastic piece 303 into the insertion groove 201.

[0044] During assembly, the straight end of the U-shaped elastic piece 303 is inserted into the insertion slot 201 of the pressure plate 2, and then the first bolt 4 is screwed in for tightening. The operator holds the pressure plate 2, aligns the elastic piece 303 with the upright block 301, and pushes the pressure plate 2 horizontally. The elastic piece 303 deforms under pressure, and its locking block 304 slides into the locking groove 302 of the upright block 301 under guiding action. When the locking block 304 is fully inserted into the locking groove 302, the deformation restoring force of the elastic piece 303 causes the locking block 304 to self-lock against the wall of the locking groove 302. At this time, the sealing surface of the pressure plate 2 completely covers the clearance hole 101, and the male plug of the external wire is precisely inserted into the power female plug under the guiding action of the pressure plate 2. Disassembly is performed in reverse; pressing the elastic piece 303 releases the self-locking state, thus facilitating the assembly and disassembly of the male and female plugs.

[0045] A guide groove 3011 is provided on the side wall of the upright block 301, and a guide block 202 is provided on the pressure plate 2. The guide block 202 is slidably connected inside the guide groove 3011, and a corner block 203 is provided at the connection between the guide block 202 and the pressure plate 2 to enhance the connection strength.

[0046] Example 3

[0047] like Figure 2 , Figure 3 and Figure 5As shown, based on the above embodiments, in this embodiment, a first sealing gasket 5 is provided on the side of the fixing plate 1 near the power supply housing to seal the connection between the fixing plate 1 and the power supply housing. The first sealing gasket 5 is annular in shape, and the clearance hole 101 is located in the inner ring of the first sealing gasket 5. When the fixing plate 1 is fixed to the power supply housing, the first sealing gasket 5 is located between the fixing plate 1 and the power supply housing. In this way, in a humid environment, moisture can be prevented from seeping into the connection between the fixing plate 1 and the power supply housing into the connection within the clearance hole 101. A second sealing gasket 6 is provided on the side of the fixing plate 1 away from the power supply housing to seal the connection between the fixing plate 1 and the pressure plate 2. The second sealing gasket 6 is annular in shape, and the clearance hole 101 is located in the inner ring of the second sealing gasket 6. When the pressure plate 2 is snapped onto the fixing plate 1, the second sealing gasket 6 is located between the fixing plate 1 and the pressure plate 2. In this way, in a humid environment, moisture can be prevented from seeping into the connection between the fixing plate 1 and the pressure plate 2 into the connection within the clearance hole 101. The center of the pressure plate 2 is provided with a socket hole 204 for connecting external wires. Multiple sealing rings 7 are provided inside the socket hole 204. When the external wire is connected inside the socket hole 204, the sealing rings 7 are located between the socket hole 204 and the external wire. In this way, in a humid environment, moisture can be prevented from seeping into the connection between the socket hole 204 and the external wire into the connection in the clearance hole 101.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate and not limit the technical solutions of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model without departing from the spirit and scope of this utility model. Any modifications or partial substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A sealing structure for an intrinsically safe power supply used in mining, characterized in that, The utility model relates to a kind of sealing structure of power supply, including: Fixed plate (1), the fixed plate (1) is fixed on the side wall of power supply shell, the fixed plate (1) is set with the avoiding hole (101) that female plug on power supply shell is exposed to outside on it; Pressing plate (2), the pressing plate (2) is set on external lead, and the pressing plate (2) is clamped on fixed plate (1) by clamping assembly (3); When pressing plate (2) is clamped on fixed plate (1), male plug on external lead is inserted in female plug on power supply shell, and pressing plate (2) seals avoiding hole (101) simultaneously.

2. The mine-used intrinsically safe power supply sealing structure according to claim 1, characterized in that, The clamping assembly (3) includes: Two vertical blocks (301), two vertical blocks (301) are symmetrically fixed on the both sides of fixed plate (1), and the side wall of two vertical blocks (301) is set with clamping groove (302); Two elastic sheets (303), two elastic sheets (303) are arranged on the both sides of pressing plate (2), the elastic sheet (303) is U-shaped, one end of the elastic sheet (303) is connected to the pressing plate (2), and the other end of the elastic sheet (303) is provided with clamping block (304) for cooperating with clamping groove (302).

3. The mine-used intrinsically safe power supply sealing structure according to claim 2, characterized in that, The pressing plate (2) is set with inserting groove (201), one end of the elastic sheet (303) is inserted into the inside of inserting groove (201), and the pressing plate (2) is provided with a plurality of first bolts (4) for fixing the end of elastic sheet (303) in inserting groove (201).

4. The mine-used intrinsically safe power supply sealing structure according to claim 2, characterized in that, The side wall of the vertical block (301) is set with guide groove (3011), and the pressing plate (2) is provided with guide block (202), and the guide block (202) is slidably connected in the inside of guide groove (3011).

5. The mine-used intrinsically safe power supply sealing structure according to claim 4, characterized in that, The connection of the guide block (202) and the pressing plate (2) is provided with corner block (203) for enhancing the connection strength.

6. The mine-used intrinsically safe power supply sealing structure according to claim 2, characterized in that, The side wall of the elastic sheet (303) is provided with anti-skid lines.

7. The mine-used intrinsically safe power supply sealing structure according to claim 1, characterized in that, The side of the fixed plate (1) close to the power supply shell is provided with first sealing gasket (5) for sealing the connection of the fixed plate (1) and the power supply shell.

8. The mine-used intrinsically safe power supply sealing structure according to claim 1, characterized in that, The side of the fixed plate (1) away from the power supply shell is provided with second sealing gasket (6) for sealing the connection of the fixed plate (1) and the pressing plate (2).

9. The mine-used intrinsically safe power supply sealing structure according to claim 1, characterized in that, The center of the pressing plate (2) is set with sleeve hole (204) for sleeving external lead, and the inside of the sleeve hole (204) is provided with a plurality of sealing rings (7).

10. The mine-used intrinsically safe power supply sealing structure according to claim 1, characterized in that, The fixed plate (1) is fixedly connected on the power supply shell by second bolt (8).

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