Explosion-proof and intrinsically safe power monitoring substation for mine

Abstract

The utility model relates to the technical field of mine electric power monitoring substation, especially is mine explosion -proof and intrinsically safe electric power monitoring substation, including electric power monitoring substation body, the bottom both sides of electric power monitoring substation body are fixedly installed with support track symmetry respectively, the ground below each support track is fixedly installed with guide wheel group ground rail respectively, the left and right sides of electric power monitoring substation body are installed with a plurality of multi -type communication interface respectively, the rear end portion of electric power monitoring substation body is installed with the assembly of charging and power failure connector. The utility model cooperates with the matching structure of support track and guide wheel group ground rail through setting up support track and guide wheel group ground rail at electric power monitoring substation body bottom, and is matched with front -mounted traction buckle and rear -mounted traction buckle, forms the mobile design of two -way traction, can flexible adaptation the demand of coal mine underground operation surface frequent adjustment, solves the problem that traditional fixed installation type monitoring substation is difficult to shift.

Description

Technical Field

[0001] This utility model relates to the technical field of mine power monitoring substations, and in particular to mine explosion-proof and intrinsically safe power monitoring substations. Background Technology

[0002] In the special working environment of underground coal mines, where methane and coal dust are explosive, the power monitoring substation, as the core node connecting underground high / low voltage switches, transformers, and other equipment with the ground monitoring center, directly determines the safety and efficiency of power system operation and maintenance.

[0003] In underground coal mine power monitoring scenarios, traditional mine power monitoring substations, due to design limitations, are difficult to adapt to the complex needs underground. Current power monitoring substations generally suffer from the following problems: When the layout of underground roadways in a coal mine changes dynamically with the progress of mining, the position of monitoring equipment needs to be adjusted according to the working face. However, traditional power monitoring substations mostly adopt a fixed installation structure, which is difficult to disassemble and move quickly after installation. As a result, when the working face advances or equipment is repaired, a lot of manpower and resources are needed to adjust the monitoring points, which not only affects the continuity of monitoring, but also increases the cost and safety risks of underground operations.

[0004] Second, poor interface compatibility: It only supports a single type of communication interface or has an insufficient number of interfaces, making it impossible to simultaneously connect high / low voltage switches that require high-speed Ethernet transmission, mobile devices that require long-distance fiber optic transmission, and old sensors that require RS-485 communication. Additional converters are required, increasing costs and the risk of failure.

[0005] Third, the operation of docking charging and power failure at the back end of the substation is cumbersome. It cannot achieve automatic connection or disconnection. The interface has no automatic docking structure. Maintenance personnel need to manually align and connect in the dark and narrow environment underground, which is time-consuming and laborious. On the other hand, the line needs to be manually cut off when the power is off, and the connection status needs to be manually monitored when charging. This not only increases the workload of maintenance, but also poses safety hazards. In the explosive environment underground, manual operation is prone to generating electrical sparks due to poor line contact, or short circuits due to misoperation, which may induce the risk of methane and coal dust explosions.

[0006] Therefore, it is necessary to design a safety-type power monitoring substation suitable for mining applications. Utility Model Content

[0007] To solve one of the aforementioned technical problems, the present invention adopts the following technical solution: a mine explosion-proof and intrinsically safe power monitoring substation, comprising a power monitoring substation body, with support rails symmetrically fixedly installed on both sides of the bottom of the power monitoring substation body, and guide wheel sets fixedly installed on the ground below each support rail, with each support rail symmetrically fitted onto the guide wheel sets at their corresponding positions, and several multi-type communication interfaces installed on the left and right sides of the power monitoring substation body, each communication interface being used to connect to supporting equipment, and a charging / discharging connector assembly installed at the rear end of the power monitoring substation body.

[0008] Based on any of the above technical solutions, a further optimization is made as follows: rear-mounted traction buckles are fixedly installed on both sides of the rear end of the power monitoring substation body, and front-mounted traction buckles are fixedly and symmetrically installed on both sides of the front part of the power monitoring substation body. Each of the front-mounted traction buckles and each of the rear-mounted traction buckles are connected to the traction steel rope on the traction equipment in the coal mine.

[0009] Based on any of the above technical solutions, a further optimization is made as follows: the support rail includes a C-shaped channel steel fixedly installed at the bottom of the power monitoring substation body, the opening of the C-shaped channel steel is set towards the guide wheel set ground rail and can move along the length direction of the guide wheel set ground rail.

[0010] Based on any of the above technical solutions, a further optimization is made as follows: the guide wheel set ground rail includes a guide rail fixed on the ground. The cross-section of the guide rail is C-shaped with its opening facing the main body of the power monitoring substation. A through groove is provided along the length of the top horizontal section of the guide rail. Several supporting guide wheels are arranged at intervals along the length of the through groove. The two ends of the axle of each supporting guide wheel are respectively movably inserted into the rotating holes of the guide rail on both sides. The top and bottom of the supporting guide wheel are respectively pressed against the C-shaped cavity of the C-shaped channel steel at their corresponding positions. The bottom of the guide rail is fixed on the ground.

[0011] Based on any of the above technical solutions, a further optimization is made as follows: the charging and disconnecting connector assembly includes a quick-release charging plug installed in the middle of the rear end face of the power monitoring substation body. The interior of the quick-release charging plug is connected to the power supply terminal inside the power monitoring substation body. When in operation, the quick-release charging plug is used to plug into the port of the charging equipment configured in the coal mine. An insulating protective cylinder is provided around the quick-release charging plug, and the inner end of the insulating protective cylinder is fixed to the rear end face of the power monitoring substation body.

[0012] Based on any of the above technical solutions, a further optimization is made by installing lifting rings on both sides of the top of the power monitoring substation body, the lifting rings being used to cooperate with external lifting equipment.

[0013] Based on any of the above technical solutions, a further optimization is made: the power monitoring substation body adopts an intrinsically safe power monitoring substation.

[0014] Based on any of the above technical solutions, a further optimization is made: the spacing between the central axes of each of the supporting guide wheels is 100-200mm.

[0015] Based on any of the above technical solutions, a further optimization is made: a cleaning and slag discharge space is formed between the C-shaped channel steel and the corresponding guide rail.

[0016] Based on any of the above technical solutions, a further optimization is made: the bottom surface of each of the cleaning and slag discharge spaces is a guide slope with the inner end sloping downward.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, by setting a supporting rail and a guide wheel set ground rail cooperation structure at the bottom of the power monitoring substation body, and combining it with a front traction buckle and a rear traction buckle, forms a bidirectional traction mobile design, which can flexibly adapt to the needs of frequent adjustments in the underground working face of coal mines, solves the problem of traditional fixed installation monitoring substations being difficult to move, and greatly improves the flexibility of the equipment in the complex underground environment.

[0018] 2. This utility model, by setting an insulating protective cylinder around the quick-release charging plug and combining it with the intrinsically safe design of the power monitoring substation, can effectively limit the electrical sparks generated during charging and plugging to a protective space, preventing contact with flammable and explosive gases underground, while blocking the risk of accidental electrical conduction, fully meeting the intrinsic safety and explosion-proof requirements of underground coal mines, and significantly improving the safety of equipment use.

[0019] 3. This utility model forms a cleaning and slag discharge space between the C-shaped channel steel and the guide rail, and sets the bottom surface of the space as a guide slope with the inner end sloping downward. This allows for the rapid removal of dust, gravel and other debris accumulated inside by tools such as high-pressure water guns, and also enables the directional discharge of cleaning wastewater and debris with the help of the guide slope. Maintenance can be completed without disassembling the equipment, which greatly reduces the difficulty and time cost of underground cleaning operations and ensures the long-term stable operation of the equipment. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or components are generally identified by similar reference numerals. In the drawings, the elements or components are not necessarily drawn to scale.

[0021] Figure 1 This is a three-dimensional structural diagram of the first state of this utility model.

[0022] Figure 2 This is a side view of the structure of this utility model.

[0023] Figure 3 This is a three-dimensional structural diagram of the second state of this utility model.

[0024] Figure 4 This is a front view structural diagram of the present invention.

[0025] Figure 5 This is a schematic diagram of the rear view structure of this utility model.

[0026] In the diagram: 1. Power monitoring substation body; 2. Support rail; 3. Communication interface; 4. Front traction buckle; 5. Rear traction buckle; 6. Supporting guide wheel; 7. C-shaped channel steel; 8. Guide rail; 9. Through long trough; 10. Quick-release charging plug; 11. Insulating protective cylinder; 12. Lifting ring; 13. Cleaning and slag discharge space; 14. Guide slope. Detailed Implementation

[0027] The embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of the present utility model, and are therefore merely examples and should not be construed as limiting the scope of protection of the present utility model. The specific structure of the present utility model is as follows: Figures 1-5 As shown in the image.

[0028] Example 1: A mine-use explosion-proof and intrinsically safe power monitoring substation includes a power monitoring substation body 1. Support rails 2 are symmetrically fixedly installed on both sides of the bottom of the power monitoring substation body 1. Guide wheel sets are fixedly installed on the ground below each support rail 2. Each support rail 2 is symmetrically installed on the guide wheel sets at its corresponding position. Several communication interfaces 3 of various types are installed on the left and right sides of the power monitoring substation body 1. Each communication interface 3 is used to connect with supporting equipment. A charging / discharging connector assembly is installed at the rear end of the power monitoring substation body 1.

[0029] This utility model is an improved design based on the existing power monitoring substation. The improved mine explosion-proof and intrinsically safe power monitoring substation can better match external communication equipment and has a richer range of interface types. In addition, the mine explosion-proof and intrinsically safe power monitoring substation adopts a traction-mobile structure, which can better meet the needs of flexible transfer in coal mines.

[0030] This explosion-proof and intrinsically safe power monitoring substation for mining uses the substation body 1 as its core component. Symmetrical support rails 2 are fixed to both sides of the bottom of the substation body 1, and each support rail 2 is fitted with a corresponding guide wheel set ground rail to form a movable structure, enabling the substation body 1 to move directionally along the guide wheel set ground rails. Simultaneously, multiple types of communication interfaces 3 are installed on the left and right sides of the substation body 1 to establish data transmission and signal interaction channels with various supporting equipment in the coal mine (such as sensors, controllers, and host computers). The charging / disconnecting connector assembly at the rear of the substation body 1 is used to connect to external charging equipment or power lines, enabling power supply and disconnection control of the substation body 1 and ensuring the power supply for equipment operation.

[0031] When it needs to move forward or backward, the power monitoring substation body 1 is pulled by external traction equipment and steel wire ropes to provide traction force to the front traction buckles 4 and rear traction buckles 5 on the current power monitoring substation body 1. When the power monitoring substation body 1 moves, it rolls and moves along the ground rail of the guide wheel group under the action of the two supporting rails 2. In the process of translation, this utility model adopts the method of rail movement and each supporting guide wheel 6 fixed on the axis to realize the flexible movement of the entire power monitoring substation body 1. This movement method is mainly due to the fact that the dust environment inside the mine is relatively harsh. The traditional rail combination method is easy to block the slide. At the same time, the existing slide rails and sliders are located on the ground and the openings face upward, which makes it easy for dust to enter and get stuck.

[0032] The support track 2 of this utility model is located at the bottom of the power monitoring substation and adopts a side opening, which facilitates rinsing and cleaning. In addition, each supporting guide wheel 6 is located above the ground. When it is necessary to clean the supporting guide wheel 6, it is only necessary to move the current power monitoring substation body 1 to make room for quick rinsing with a high-pressure water gun. The wastewater after rinsing can flow directly out along the cleaning and slag discharge space 13, thereby quickly ensuring the cleanliness and smoothness of the internal guide components of this utility model, making the cleaning operation simpler and faster.

[0033] Based on any of the above technical solutions, a further optimization is made as follows: rear-mounted traction buckles 5 are fixedly installed on both sides of the rear end of the power monitoring substation body 1, and front-mounted traction buckles 4 are fixedly and symmetrically installed on both sides of the front part of the power monitoring substation body 1. Each of the front-mounted traction buckles 4 and each of the rear-mounted traction buckles 5 are respectively connected to the traction steel rope on the traction equipment in the coal mine.

[0034] By fixing rear-mounted traction buckles 5 on both sides of the rear end of the power monitoring substation body 1 and symmetrical front-mounted traction buckles 4 on both sides of the front end, a bidirectional traction force structure is formed.

[0035] When the power monitoring substation body 1 needs to move along the guide wheel set rail, the traction equipment in the coal mine is connected to the corresponding traction buckles via traction steel cables: when moving forward, the traction equipment pulls the front traction buckles 4 on both sides of the front, so that the traction force is transmitted to the power monitoring substation body 1 through the symmetrically distributed front traction buckles 4, driving the body to move forward in a directional translation along the guide wheel set rail; when moving backward, the traction equipment pulls the rear traction buckles 5 on both sides of the rear, and similarly transmits the traction force through the symmetrically distributed rear traction buckles 5, realizing the body's backward translation. Throughout the process, the symmetrical layout of the front traction buckles 4 and the rear traction buckles 5 ensures that the traction force is evenly applied to the power monitoring substation body 1, avoiding equipment deviation or jamming caused by unilateral force, and forming a coordinated operation with the original support rail 2 and guide wheel set rail, ensuring the stability and smoothness of the movement process.

[0036] Based on any of the above technical solutions, a further optimization is made as follows: the support rail 2 includes a C-shaped channel steel 7 fixedly installed at the bottom of the power monitoring substation body 1, the opening of the C-shaped channel steel 7 is set towards the guide wheel set ground rail and can move along the length direction of the guide wheel set ground rail.

[0037] The support rail 2 is specifically defined as a C-shaped channel steel 7 fixedly installed at the bottom of the power monitoring substation body 1. The opening of the C-shaped channel steel 7 faces the guide wheel set ground rail and cooperates with the guide wheel set ground rail.

[0038] During the movement of the power monitoring substation body 1, the C-shaped channel steel 7 forms a nested fit with the guide wheel group ground rail with its open side. The supporting guide wheel 6 of the guide wheel group ground rail is embedded in the groove cavity of the C-shaped channel steel 7. When subjected to the traction force transmitted by the front traction buckle 4 or the rear traction buckle 5, the C-shaped channel steel 7 can slide smoothly along the length direction of the guide wheel group ground rail. At the same time, the groove cavity structure of the C-shaped channel steel 7 forms a wrapping limit on the components of the guide wheel group ground rail, preventing the support rail 2 from disengaging from the guide wheel group ground rail during the movement. Finally, the power monitoring substation body 1 is directionally moved along the preset trajectory, forming a complete moving structure together with the front traction buckle 4, the rear traction buckle 5, and the guide wheel group ground rail.

[0039] Based on any of the above technical solutions, a further optimization is made as follows: the guide wheel set ground rail includes a guide rail 8 fixed on the ground. The cross-section of the guide rail 8 is C-shaped with its opening facing the main body 1 of the power monitoring substation. A through groove 9 is provided along the length of the top horizontal section of the guide rail 8. Several supporting guide wheels 6 are arranged at intervals along the length of the through groove 9. The two ends of the axle of each supporting guide wheel 6 are respectively movably inserted into the rotating holes of the guide rail 8 on both sides. The top and bottom of the supporting guide wheel 6 are respectively pressed against the C-shaped cavity of the C-shaped channel steel 7 at their corresponding positions. The bottom of the guide rail 8 is fixed on the ground.

[0040] The bottom of the guide rail 8 is fixed to the ground, providing a stable foundation for the entire ground rail structure. The through-slot 9 at the top horizontal section serves as the installation and operation channel for the guide wheel 6. The guide wheel 6 is movably inserted into the rotating holes on both sides of the guide rail 8 via axles, forming a freely rotatable rolling support structure. When the power monitoring substation body 1 moves, the C-shaped cavity of the C-shaped channel steel 7 supporting the guide rail 2 forms a tight fit with the guide wheel 6. The top and bottom of the guide wheel 6 are respectively pressed against the inner wall of the C-shaped cavity. Under the action of traction, the guide wheel 6 rotates around the axle, converting the sliding friction between the C-shaped channel steel 7 and the guide rail 8 into rolling friction. At the same time, the C-shaped cross-section of the guide rail 8 and the C-shaped channel steel 7 form a bidirectional nested limit, ensuring that the C-shaped channel steel 7 always moves along the length of the through-slot 9, ultimately achieving a smooth and directional translation of the power monitoring substation body 1.

[0041] Based on any of the above technical solutions, a further optimization is made as follows: the charging disconnector assembly includes a quick-release charging plug 10 installed in the middle of the rear end face of the power monitoring substation body 1. The interior of the quick-release charging plug 10 is connected to the power supply terminal inside the power monitoring substation body 1. When working, the quick-release charging plug 10 is used to plug into the port of the charging equipment configured in the coal mine. An insulating protective cylinder 11 is provided around the quick-release charging plug 10 (to ensure the convenience and safety of charging and prevent sparks from escaping). The inner end of the insulating protective cylinder 11 is fixed to the rear end face of the power monitoring substation body 1.

[0042] The quick-release charging plug 10 is installed in the middle of the rear end face of the power monitoring substation body 1. Its internal wiring forms an electrical connection with the power supply terminal inside the body, serving as the core interface for power input. When charging is required, the operator can directly plug the quick-release charging plug 10 into the port of the dedicated charging equipment in the coal mine, using the quick-release structure to achieve rapid docking and complete the rapid connection of the power transmission path. At the same time, the insulating protective cylinder 11 surrounding the quick-release charging plug 10 is fixed to the rear end face of the body through its inner end, forming a closed protective space around the plug. During the insertion and removal process, if an electric spark is generated momentarily when the plug contacts the port, the insulating protective cylinder 11 can confine the spark within the cylinder space, preventing the spark from directly contacting the flammable and explosive gases underground. At the same time, the insulating material blocks accidental conduction between the plug and external metal parts, realizing the functions of fast charging, spark isolation, and insulation protection, meeting the electrical safety requirements of intrinsically safe equipment in coal mines.

[0043] Example 2: Compared with Example 1, this example also includes the following technical features: Based on any of the above technical solutions, a further optimization is made: lifting rings 12 are installed on both sides of the top of the power monitoring substation body 1, and the lifting rings 12 are used to cooperate with external lifting equipment.

[0044] The lifting ring 12 is made of high-strength metal and is fixedly connected to the reinforcing structure on both sides of the top of the power monitoring substation body 1 by welding, bolting and other methods to ensure that the lifting ring 12 can bear the full weight of the body.

[0045] When the main body of the power monitoring substation 1 needs to be moved, installed, or maintained (such as crossing roadway obstacles, adjusting the installation height, or replacing damaged parts), the hook (or sling) of the external lifting equipment is connected to the lifting rings 12 on both sides. The main body is lifted from the ground and moved to the target position according to the preset trajectory by the upward traction force provided by the lifting equipment. The lifting rings 12 installed symmetrically on both sides can make the main body bear the force evenly during the lifting process, avoid the main body tilting or overturning due to the force on one side, and finally achieve safe and stable lifting operation.

[0046] Based on any of the above technical solutions, a further optimization is made: the power monitoring substation body 1 adopts the existing intrinsically safe power monitoring substation.

[0047] Based on any of the above technical solutions, a further optimization is made: the spacing between the central axes of each of the supporting guide wheels 6 is 100-200mm.

[0048] Based on any of the above technical solutions, a further optimization is made: a cleaning and slag discharge space 13 is formed between the interior of the C-shaped channel steel 7 and the corresponding guide rail 8.

[0049] During use in underground coal mines, dust, gravel particles, and other debris will enter this space through the gap between the C-shaped channel steel 7 and the guide rail 8. When cleaning is required, operators can inject cleaning media (water, compressed air) into the cleaning and slag discharge space 13 using tools such as high-pressure water guns and compressed air guns. The impact force of the media will push the accumulated debris along the length of the space towards the end of the rail or the preset slag discharge port, thus achieving the discharge of debris. At the same time, the existence of this space does not affect the normal movement of the C-shaped channel steel 7 along the guide rail 8. When the C-shaped channel steel 7 slides, a small amount of residual debris in the space can be squeezed to the edge of the space by the wheel body, avoiding debris from getting stuck between the C-shaped channel steel 7 and the guide rail 8, ensuring that the movement function is not affected by cleaning needs.

[0050] Based on any of the above technical solutions, a further optimization is made: the bottom surface of each of the cleaning and slag discharge spaces 13 is a guide slope 14 with the inner end sloping downward.

[0051] In practical applications, when solid debris such as dust and gravel enters the slag discharge space 13, or when cleaning media such as high-pressure water and compressed air are injected, the guide slope 14 uses gravitational potential energy to guide the material to flow in a directional manner. Under the combined action of its own gravity and the slope support force, the solid debris slides along the slope towards the inner end. The cleaning wastewater, under the combined action of gravity and the slope gradient, quickly gathers towards the inner end with low potential energy and is finally discharged through the slag discharge port and drainage ditch connected to the inner end.

[0052] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model. For those skilled in the art, any alternative improvements or transformations made to the implementation of this utility model fall within the protection scope of this utility model.

[0053] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. A flame-proof and intrinsically safe electric power monitoring substation for mine, comprising an electric power monitoring substation body, characterized in that: Support rails are symmetrically fixedly installed on both sides of the bottom of the power monitoring substation body. Guide wheel sets are fixedly installed on the ground below each support rail. Each support rail is symmetrically installed on the guide wheel set at its corresponding position. Several communication interfaces of various types are installed on the left and right sides of the power monitoring substation body. Each communication interface is used to connect with supporting equipment. A charging / discharging connector assembly is installed at the rear end of the power monitoring substation body.

2. The mine explosion-proof and intrinsically safe power monitoring substation according to claim 1, characterized in that: Rear-mounted traction buckles are fixedly installed on both sides of the rear end of the power monitoring substation body, and front-mounted traction buckles are fixedly and symmetrically installed on both sides of the front part of the power monitoring substation body. Each of the front-mounted traction buckles and each of the rear-mounted traction buckles are connected to the traction steel rope on the traction equipment in the coal mine.

3. The mine explosion-proof and intrinsically safe power monitoring substation according to claim 2, characterized in that: The support rail includes a C-shaped channel steel fixedly installed at the bottom of the power monitoring substation body. The opening of the C-shaped channel steel faces the guide wheel set ground rail and can move along the length direction of the guide wheel set ground rail.

4. The mine explosion-proof and intrinsically safe power monitoring substation according to claim 3, characterized in that: The guide wheel assembly includes a guide rail fixed to the ground. The cross-section of the guide rail is C-shaped with its opening facing the main body of the power monitoring substation. A through groove is provided along the length of the top horizontal section of the guide rail. Several supporting guide wheels are arranged at intervals along the length of the through groove. The two ends of the axle of each supporting guide wheel are respectively movably inserted into the rotating holes of the guide rail on both sides. The top and bottom of the supporting guide wheel are respectively pressed against the C-shaped cavity of the C-shaped channel steel at their corresponding positions. The bottom of the guide rail is fixed to the ground.

5. The mine explosion-proof and intrinsically safe power monitoring substation according to claim 4, characterized in that: The charging / disconnecting connector assembly includes a quick-release charging plug installed in the middle of the rear end face of the power monitoring substation body. The interior of the quick-release charging plug is connected to the power supply terminal inside the power monitoring substation body. When in operation, the quick-release charging plug is used to plug into the port of the charging equipment configured in the coal mine. An insulating protective cylinder is provided around the quick-release charging plug, and the inner end of the insulating protective cylinder is fixed to the rear end face of the power monitoring substation body.

6. The mine explosion-proof and intrinsically safe power monitoring substation according to claim 5, characterized in that: Lifting rings are installed on both sides of the top of the power monitoring substation body, and the lifting rings are used to cooperate with external lifting equipment.

7. The mine explosion-proof and intrinsically safe power monitoring substation according to claim 6, characterized in that: The power monitoring substation itself is an intrinsically safe power monitoring substation.

8. The mine explosion-proof and intrinsically safe power monitoring substation according to claim 7, characterized in that: The distance between the central axes of each of the aforementioned supporting guide wheels is 100-200mm.

9. The mine explosion-proof and intrinsically safe power monitoring substation according to claim 8, characterized in that: The C-shaped channel steel and its corresponding guide rail form a cleaning and slag discharge space.

10. The mine explosion-proof and intrinsically safe power monitoring substation according to claim 9, characterized in that: The bottom surface of each of the aforementioned cleaning and slag discharge spaces is a guide slope with the inner end sloping downwards.

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