Mining explosion-proof feed switch

Abstract

The utility model relates to the technical field of mining electrical equipment, in particular to a mining explosion-proof feed switch, which comprises a feed switch shell and a plurality of groups of wiring cylinders arranged at the upper end of the feed switch shell and used for connecting wires, the wiring cylinders are communicated with the interior of the feed switch shell, and fixing devices used for fixing the wires are arranged in the wiring cylinders. When an external electric wire extends into the feeder switch through the wiring cylinder and is fixed, one side of the electric wire is fixed through the fixing device, and when the feeder switch and the electric wire are overhauled, the electric wire cannot be moved even if the electric wire is pulled by the outside.

Description

Technical Field

[0001] This application relates to the field of mining electrical equipment technology, and in particular to a mining explosion-proof power supply switch. Background Technology

[0002] Explosion-proof feeder switches for mining are mainly used in various power supply systems in underground coal mines, such as central substations, mining area substations, and tunneling faces. They can be used as main switches or branch switches in power supply systems, and also as feeder switches for explosion-proof mobile substations in mines. Furthermore, they can also serve as control switches for large-capacity motors that are not frequently started.

[0003] Since the power supply switch needs to connect multiple sets of wires, it is necessary to ensure a stable connection between the wire contacts and the power supply switch when connecting the wires. During each maintenance, there may be instances where the wires are accidentally pulled from the outside, causing the connection between the wire contacts and the power supply switch to deteriorate, thus requiring reconnection. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this application is to provide a mine explosion-proof power supply switch to solve the above-mentioned technical problems.

[0005] The above-mentioned objective of this application is achieved through the following technical solution: a mine explosion-proof power supply switch, including a power supply switch housing and multiple sets of terminal blocks for connecting wires at the upper end of the power supply switch housing, wherein the terminal blocks are connected to the inside of the power supply switch housing, and a fixing device for fixing the wires is provided inside the terminal blocks.

[0006] By adopting the above technical solution, after the external wire is inserted into the inside of the power supply switch through the junction box and fixed, one side of the wire is fixed by the fixing device. When the power supply switch and the wire are being repaired, the wire or cable will not move even if it is pulled by the outside.

[0007] Furthermore, the fixing device includes a pair of vertical plates that are slidably connected vertically inside the junction box and a horizontal plate that is slidably connected horizontally inside the junction box. The horizontal plate and the vertical plate are in contact with each other, and a locking device is provided on the outer side of both the horizontal plate and the vertical plate.

[0008] By adopting the above technical solution, after the external wire is inserted into the inside of the power supply switch through the junction box and fixed, the wire is held in place by moving the vertical plate and the horizontal plate, and then the horizontal plate and the vertical plate are fixed by the locking device.

[0009] Furthermore, the locking device includes a rotating screw rotatably connected to the horizontal plate and the vertical plate, and rotating nuts threadedly connected to the rotating screw are rotatably provided on the outer side of the terminal block.

[0010] By adopting the above technical solution, when adjusting the horizontal and vertical plates, adjusting the rotating nut will drive the rotating screw to adjust the horizontal and vertical plates.

[0011] Furthermore, friction grooves are formed on the outer side of the rotating nut.

[0012] By adopting the above technical solution, staff can perform adjustment operations by hand.

[0013] Furthermore, semi-circular grooves are formed on the inner sides of both the vertical plate and the horizontal plate.

[0014] By adopting the above technical solution, the semi-circular groove is designed to better fit the sidewall of the wire.

[0015] Furthermore, a flexible layer is fixedly provided on each of the semi-arc grooves.

[0016] By adopting the above technical solution, damage to the outside of the wires can be prevented when fixing them.

[0017] Furthermore, the flexible layer is made of rubber.

[0018] Furthermore, a fixed shell is provided on the outside of the rotating nut, and a through hole matching the rotating nut is provided on the fixed shell. A flange is fixedly connected to the bottom of the fixed shell, and a groove matching the flange is provided on the terminal block.

[0019] By adopting the above technical solution, after the adjustment of the rotating nut is completed, the oxidation of the rotating nut by air is reduced by installing the fixing shell on the outside of the rotating nut.

[0020] In summary, this application offers the following beneficial technical advantages: Through the connection design between the junction box and the inside of the feeder switch housing, wires can be conveniently and safely inserted into the feeder switch. This design not only simplifies the wire connection process but also improves the reliability and safety of the connection. Furthermore, the design of multiple junction boxes allows the feeder switch to connect multiple wires simultaneously, meeting the needs of complex circuits.

[0021] Secondly, the fixing device inside the junction box plays a crucial role. Once the external wire is inserted into the feeder switch through the junction box and secured, the fixing device firmly holds one side of the wire in place. This design effectively prevents the wire from shifting or loosening due to external pulling during the connection process between the feeder switch and the wire. This not only ensures circuit stability but also avoids potential safety hazards caused by wire movement.

[0022] Furthermore, the design of this mine-use explosion-proof feeder switch also takes explosion-proof performance into account. Components such as the feeder switch housing and terminal block are all made of explosion-proof materials, enabling them to maintain stable performance in harsh mining environments. At the same time, the optimized design of the internal structure, including the fixing device and terminal block, further enhances the explosion-proof capability of the feeder switch. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure in the embodiment;

[0024] Figure 2 This is a schematic diagram of the junction box structure in the embodiment.

[0025] Reference numerals: 1. Feeder switch housing; 10. Flexible layer; 11. Rotating screw; 12. Rotating nut; 13. Vertical plate; 14. Horizontal plate; 2. Terminal block; 3. Fixed shell; 31. Flange; 32. Groove. Detailed Implementation

[0026] The present application will be further described in detail below with reference to the accompanying drawings.

[0027] Example, refer to Figure 1 as well as Figure 2 A mine explosion-proof power supply switch includes a power supply switch housing 1 and multiple sets of terminal blocks 2 at the upper end of the power supply switch housing 1 for connecting wires or cables. The terminal blocks 2 are connected to the inside of the power supply switch housing 1. The terminal blocks 2 are provided with a fixing device for fixing the wires or cables. When an external wire is inserted into the inside of the power supply switch through the terminal block 2 and connected to the power supply switch, one side of the wire is fixed by the fixing device. When the power supply switch and the wire are under maintenance, the wire will not move even if it is pulled from the outside.

[0028] The fixing device includes a pair of vertical plates 13 that are slidably connected vertically to the junction box 2 and a horizontal plate 14 that is slidably connected horizontally to the junction box 2. The horizontal plate 14 and the vertical plate 13 are in contact with each other, and locking devices are provided on the outer sides of both the horizontal plate 14 and the vertical plate 13. After the external wire is inserted into the inside of the power supply switch through the junction box 2 and fixed, the vertical plate 13 and the horizontal plate 14 are moved to hold the wire in place on all sides, and then the locking devices are used to fix the horizontal plate 14 and the vertical plate 13 in place.

[0029] In this embodiment, the locking device includes a rotating screw 11 rotatably connected to the horizontal plate 14 and the vertical plate 13, and rotating nuts 12 threadedly connected to the rotating screw 11 are rotatably provided on the outer side of the wiring sleeve 2. When adjusting the horizontal plate 14 and the vertical plate 13, adjusting the rotating nuts 12 will drive the rotating screw 11 to adjust the horizontal plate 14 and the vertical plate 13.

[0030] In this embodiment, friction grooves are provided on the outer side of the rotating nut 12. This allows workers to adjust it by hand.

[0031] In this embodiment, both the vertical plate 13 and the horizontal plate 14 have semi-circular grooves on their inner sides. The semi-circular grooves are designed to better fit the sidewalls of the wires.

[0032] In this embodiment, a flexible layer 10 is fixedly provided on each semi-circular groove to prevent damage to the outer side of the wire when fixing it. The flexible layer 10 is made of rubber.

[0033] In this embodiment, a fixing shell 3 is provided on the outside of the rotating nut 12. The fixing shell 3 has a through hole that matches the rotating nut 12. A flange 31 is fixedly connected to the bottom of the fixing shell 3. A groove 32 that matches the flange 31 is provided on the wiring tube 2. After the rotating nut 12 is adjusted, the fixing shell 3 is installed on the outside of the rotating nut 12 to reduce the oxidation of the rotating nut 12 by air.

[0034] Specific implementation process: When using the fixing device for the mine explosion-proof feeder switch, first ensure that the feeder switch housing 1 and its terminal block 2 are correctly installed and in a safe condition. Next, carefully insert the external wire into the feeder switch through the terminal block 2 and initially fix it. At this time, observe the position and size of the wire to determine how to adjust the vertical plate 13 and horizontal plate 14 in the fixing device. By adjusting the rotating nut 12, the rotating screw 11 is driven, causing the vertical plate 13 to slide up and down inside the terminal block 2, and the horizontal plate 14 to slide left and right, gradually adjusting their positions until they are tightly fitted to the wire and evenly distributed around it. During the adjustment process, the friction grooves on the outside of the rotating nut 12 can be used for manual adjustment, ensuring accuracy and convenience.

[0035] Once the vertical plate 13 and horizontal plate 14 are in the desired positions, further tighten the rotating nut 12 to ensure they are securely fixed to the junction box 2. At this point, check that the locking device is stable to ensure the wire is firmly secured. Simultaneously, since both the vertical plate 13 and horizontal plate 14 have semi-circular grooves on their inner sides, and a flexible layer 10 is fixed to these grooves, this not only allows for better contact with the sidewalls of the wire but also prevents damage to the outer side of the wire during fixing. The flexible layer 10 is made of rubber and has good elasticity and wear resistance.

[0036] After confirming the fixing device is stable, install the fixing housing 3 onto the outside of the rotating nut 12. Ensure that the through hole of the fixing housing 3 matches the rotating nut 12, and that the flange 31 fits tightly against the groove 32 on the terminal block 2. This helps reduce oxidation of the rotating nut 12 by air, extending its service life. After completing all fixing and installation steps, check that the entire power supply switch and its fixing device are in good condition. Perform necessary tests to ensure that the power supply switch functions properly and that the wires are securely and safely fixed.

[0037] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A mine explosion-proof feeder switch, characterized in that, The utility model relates to a power feeder switch shell (1) and a plurality of sets of terminal block (2) for connecting electric wire on the power feeder switch shell (1), the terminal block (2) and the power feeder switch shell (1) are communicated, and the terminal block (2) is internally provided with fixing device for fixing electric wire.

2. The mine explosion-proof feeder switch according to claim 1, wherein, The fixing device includes a pair of vertical plates (13) slidingly connected in the terminal block (2) and a horizontal plate (14) slidingly connected in the terminal block (2), the horizontal plate (14) and the vertical plate (13) are attached, and the horizontal plate (14) and the vertical plate (13) are provided with locking device on the outside.

3. The mine explosion-proof feeder switch of claim 2, wherein, The locking device includes a rotating screw (11) rotatably connected to the horizontal plate (14) and the vertical plate (13), and the terminal block (2) is rotatably provided with a rotating nut (12) threadedly connected to the rotating screw (11) on the outside.

4. The mine explosion-proof feeder switch of claim 3, wherein, The rotating nut (12) is provided with friction lines on the outside.

5. The mine use explosion-proof feeder switch according to claim 2, characterized in that, The vertical plate (13) and the horizontal plate (14) are provided with semicircular grooves on the inside.

6. The mine use explosion-proof feeder switch according to claim 5, characterized in that, The semicircular grooves are fixedly provided with flexible layers (10).

7. The mine use explosion-proof feeder switch according to claim 6, characterized in that, The flexible layers (10) are made of rubber.

8. The mine explosion-proof feeder switch of claim 2 wherein, The rotating nut (12) is provided with a fixing shell (3) on the outside, the fixing shell (3) is provided with a through hole matched with the rotating nut (12), the fixing shell (3) is fixedly connected with a flange (31) at the bottom, and the terminal block (2) is provided with a recess (32) matched with the flange (31).

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