Protective door structure of mining type switch cabinet

Abstract

The utility model relates to a protective door structure of a mining type switch cabinet, which is better and longer in sealing effect, capable of reducing opening and closing noise, good in structural firmness and low in production cost. Four mounting frames distributed in a square shape are arranged on the inner side face of the door plate and located between the square-shaped door plate frame and the window, and the four mounting frames are each provided with a glass pressing plate used for pressing the back face of the glass plate. The glass plate is pressed by the four glass pressing plates to cover the window in a sealing mode, the glass plate is arranged on the inner side face of the door plate, square sealing plates are arranged on the outer sides of the four installation frames distributed in a square shape, square sealing strips are arranged on the upper end faces of the square sealing plates, and the outer side faces of the square sealing strips are higher than the outer side face of a square door plate frame. The protective door structure has the advantages that the sealing effect is better and longer, and the opening and closing noise can be reduced.

Description

Technical Field

[0001] The utility model belongs to the field of switch cabinet manufacturing, and particularly relates to a protective door structure of a mine-used switch cabinet. Background Art

[0002] The existing operating door (i.e., protective door) of a mine-used switch cabinet, such as CN 213959500 U, with the name "A Low-voltage Switch Cabinet for Mine Vacuum", includes a cabinet body. A storage chamber is provided inside the cabinet body. A communication groove is opened inside the cabinet body, and the communication groove is arranged outside the storage chamber. Ventilation holes are opened on the inner wall of the storage chamber, and the ventilation holes are communicated with the communication groove. A fan chamber is provided inside the cabinet body, and the fan chamber is arranged at the bottom of the storage chamber. An air inlet is opened on one side of the cabinet body, and the air inlet is communicated with the fan chamber. A dust-proof plate is provided on one side of the air inlet, and the dust-proof plate is fixedly connected to one side of the cabinet body by screws. An air filter plate is provided on the side of the air inlet away from the dust-proof plate. A limiting plate is fixedly connected inside the fan chamber, and the number of the limiting plates is set to two. A dehumidifying plate is arranged between the two limiting plates. A heat dissipation fan is provided on one side of one of the limiting plates, and a ventilation pipe is fixedly connected to the side of the heat dissipation fan away from the limiting plate. The end of the ventilation pipe away from the heat dissipation fan is communicated with the communication groove. An air outlet is opened on the side of the cabinet body away from the fan chamber, and the air outlet is communicated with the communication groove. The number of the ventilation holes is set to be multiple, and the multiple ventilation holes are evenly distributed. A clamping block is fixedly connected to one side of the air filter plate, and a clamping groove is opened on one side of the fan chamber, and the clamping groove matches the clamping block. An air-permeable through hole is opened in the middle of the limiting plate, and the number of the air-permeable through holes is set to be multiple, and the multiple air-permeable through holes are evenly distributed. The dehumidifying plate is filled with SAP superabsorbent resin inside. The number of the air outlets is set to be multiple, and the multiple air outlets are arranged in a linear array. A shielding plate is provided on the top of the air outlet, and the shielding plate is fixedly connected to one side of the cabinet body. A protective top cover is provided on the top of the cabinet body. Fixed sleeves are fixedly connected to the bottom of the protective top cover and the top of the cabinet body respectively, and a buffer pad is fixedly sleeved between the two fixed sleeves. The buffer pad is made of rubber material. Buffer springs are provided at the four corners of the top of the cabinet body. One end of each buffer spring is fixedly connected to the top of the cabinet body, and the other end of each buffer spring is fixedly connected to the bottom of the protective top cover. An operating door is provided on one side of the storage chamber, an observation window is provided in the middle of the operating door, and a cleaning door is provided on one side of the fan chamber. When the operating door is installed in the storage chamber, the sealing effect between the operating door and the storage chamber cabinet depends on the flatness of the contact surface between the operating door and the storage chamber cabinet. However, with the opening and closing of the operating door, the touch (hard contact) between the operating door and the storage chamber cabinet will affect the flatness of the contact surface between the two (the flatness between the two will decrease), thereby affecting the sealing effect when the operating door is closed. Content of the Utility Model

[0003] Design objective: To avoid the deficiencies in the background technology, a protective door structure for a mine-used switch cabinet is designed, which not only has a better and longer sealing effect, but also can reduce the opening and closing noise, and at the same time has good structural strength and low production cost.

[0004] Design solution: To achieve the above design objective.

[0005] 1. A window is provided in the exact middle of the door panel, and the window penetrates through the inner and outer side surfaces of the door panel. A frame plate is respectively provided at the four sides of the inner side surface of the door panel, and the four frame plates form a "mouth"-shaped door panel frame. The length of the glass plate is greater than the length of the window, and the width of the glass plate is greater than the width of the window. Four mounting brackets distributed in a "mouth" shape are provided on the inner side surface of the door panel, and the four mounting brackets distributed in a "mouth" shape are located between the "mouth"-shaped door panel frame and the window. A glass pressing plate for pressing the back surface of the glass plate is respectively mounted on the four mounting brackets. The glass plate covers the window under the pressing of the four glass pressing plates and is arranged on the inner side surface of the door panel. An "mouth"-shaped sealing plate is provided on the outer side of the four mounting brackets distributed in a "mouth" shape, and an "mouth"-shaped sealing strip is provided on the upper end surface of the "mouth"-shaped sealing plate. The design that the outer side surface of the "mouth"-shaped sealing strip is higher than the outer side surface of the "mouth"-shaped door panel frame is one of the technical features of the present utility model.The purpose of such a design is as follows: A window is provided in the exact middle of the door panel, and the window penetrates through the inner and outer side surfaces of the door panel. A border plate is respectively provided at the four sides of the inner side surface of the door panel, and the four border plates form a "square" - shaped door panel border. The length of the glass plate is greater than the length of the window, and the width of the glass plate is greater than the width of the window. Four mounting brackets distributed in a "square" shape are provided on the inner side surface of the door panel, and the four mounting brackets distributed in a "square" shape are located between the "square" - shaped door panel border and the window. A glass pressing plate for pressing the back surface of the glass plate is respectively installed on the four mounting brackets. The glass plate covers the window under the pressing of the four glass pressing plates and is arranged on the inner side surface of the door panel. An "square" - shaped sealing plate is provided on the outer side of the four mounting brackets distributed in a "square" shape, and an "square" - shaped sealing strip is provided on the upper end surface of the "square" - shaped sealing plate. The outer side surface of the "square" - shaped sealing strip is higher than the outer side surface of the "square" - shaped door panel border. First, the setting of the "square" - shaped sealing plate and the "square" - shaped sealing strip can ensure the sealing effect when the protective door is closed with the mining - type switch cabinet. In addition, since the "square" - shaped sealing strip is a rubber part, when the "square" - shaped sealing strip contacts (soft contact) the cabinet body of the mining - type switch cabinet, the flatness of the contact surface between the two is not affected, and the sealing effect is still good after long - term use. At the same time, the soft contact between the "square" - shaped sealing strip and the cabinet body of the mining - type switch cabinet can reduce the noise when the protective door is opened and closed. Second, a border plate is respectively provided at the four sides of the inner side surface of the door panel, and the four border plates form a "square" - shaped door panel border. The length of the glass plate is greater than the length of the window, and the width of the glass plate is greater than the width of the window. Four mounting brackets distributed in a "square" shape are provided on the inner side surface of the door panel, and the four mounting brackets distributed in a "square" shape are located between the "square" - shaped door panel border and the window. A glass pressing plate for pressing the back surface of the glass plate is respectively installed on the four mounting brackets. The glass plate covers the window under the pressing of the four glass pressing plates and is arranged on the inner side surface of the door panel. This not only facilitates the assembly of the glass plate and the door panel, but also the setting of the four glass pressing plates can ensure the sealed assembly of the contact surface between the glass plate and the door panel.

[0006] 2. The four border plates are formed by bending the four side edges of the door panel; the "mouth"-shaped sealing plate is hermetically welded to the inner side surface of the door panel. The mounting bracket is an L-shaped plate. The outer end surface of the horizontal plate in the L-shaped plate is welded to the inner wall surface of the corresponding side in the "mouth"-shaped sealing plate, and the outer end surface of the vertical plate in the L-shaped plate is welded to the inner side surface of the door panel. The upper end surface of the horizontal plate is provided with a plurality of riveting holes I, and the riveting holes I penetrate through the upper and lower end surfaces of the horizontal plate. The upper end surface of the mounting plate section in the glass pressing plate is provided with a plurality of riveting holes II, and the riveting holes II penetrate through the upper and lower end surfaces of the mounting plate section. After the riveting holes II are aligned with the corresponding riveting holes I, the glass pressing plate is fixedly connected to the corresponding mounting bracket through rivets. At this time, the pressing plate section in the glass pressing plate presses one side surface of the glass plate, and the other side surface of the glass plate is in sealing contact with the inner side surface of the door panel. This design is the second technical feature of the present invention. The purpose of such design is as follows: First, the four border plates are formed by bending the four side edges of the door panel, which can not only improve the strength of the "mouth"-shaped door panel border, but also improve the forming efficiency of the "mouth"-shaped door panel border. Second, the "mouth"-shaped sealing plate is hermetically welded to the inner side surface of the door panel. The mounting bracket is an L-shaped plate. The outer end surface of the horizontal plate in the L-shaped plate is welded to the inner wall surface of the corresponding side in the "mouth"-shaped sealing plate, and the outer end surface of the vertical plate in the L-shaped plate is welded to the inner side surface of the door panel. The upper end surface of the horizontal plate is provided with a plurality of riveting holes I, and the riveting holes I penetrate through the upper and lower end surfaces of the horizontal plate. The upper end surface of the mounting plate section in the glass pressing plate is provided with a plurality of riveting holes II, and the riveting holes II penetrate through the upper and lower end surfaces of the mounting plate section. After the riveting holes II are aligned with the corresponding riveting holes I, the glass pressing plate is fixedly connected to the corresponding mounting bracket through rivets. At this time, the pressing plate section in the glass pressing plate presses one side surface of the glass plate, and the other side surface of the glass plate is in sealing contact with the inner side surface of the door panel. That is, the combined use of the "mouth"-shaped sealing plate and the L-shaped plate can not only improve the bonding strength between the two (the "mouth"-shaped sealing plate and the L-shaped plate) and the door panel, but also the combined use of the two can reduce the production cost of the protective door.

[0007] 3. The thickness of the glass plate is less than the thickness of the mounting bracket. The glass pressing plate is composed of a mounting plate section, a connecting plate section, and a pressing plate section. One end of the connecting plate section is fixedly connected to one end of the mounting plate section, and the other end of the connecting plate section is fixedly connected to one end of the pressing plate section. The design that the mounting plate section and the pressing plate section are arranged in parallel is the third technical feature of the present invention. The purpose of such design is as follows: The thickness of the glass plate is less than the thickness of the mounting bracket. The glass pressing plate is composed of a mounting plate section, a connecting plate section, and a pressing plate section. One end of the connecting plate section is fixedly connected to one end of the mounting plate section, and the other end of the connecting plate section is fixedly connected to one end of the pressing plate section. The mounting plate section and the pressing plate section are arranged in parallel, so that the user can adjust the vertical distance between the mounting plate section and the pressing plate section as needed (by adjusting the slope of the connecting plate section), thereby ensuring that the glass pressing plate effectively presses the glass plate.

[0008] 4. The "mouth"-shaped sealing strip is composed of a sealing strip main body part and a sealing strip installation part, and the sealing strip main body part and the sealing strip installation part are integrally formed by rubber. The lower end surface of the sealing strip installation part is provided with a "mouth"-shaped groove matching the "mouth"-shaped sealing plate. The "mouth"-shaped sealing strip is installed on the "mouth"-shaped sealing plate through the plug-in fit of the "mouth"-shaped groove and the upper end head of the "mouth"-shaped sealing plate. At this time, the design that the outer side surface of the sealing strip main body part in the "mouth"-shaped sealing strip is higher than the outer side surface of the "mouth"-shaped door panel frame is the fourth technical feature of the present utility model. The purpose of such design is as follows: The "mouth"-shaped sealing strip is composed of a sealing strip main body part and a sealing strip installation part, and the sealing strip main body part and the sealing strip installation part are integrally formed by rubber. The lower end surface of the sealing strip installation part is provided with a "mouth"-shaped groove matching the "mouth"-shaped sealing plate. The "mouth"-shaped sealing strip is installed on the "mouth"-shaped sealing plate through the plug-in fit of the "mouth"-shaped groove and the upper end head of the "mouth"-shaped sealing plate. At this time, the outer side surface of the sealing strip main body part in the "mouth"-shaped sealing strip is higher than the outer side surface of the "mouth"-shaped door panel frame; the setting that the lower end surface of the sealing strip installation part is provided with a "mouth"-shaped groove matching the "mouth"-shaped sealing plate facilitates the disassembly and assembly of the sealing strip, thereby facilitating the assembly and maintenance of the sealing strip.

[0009] 5. A cavity is provided inside the sealing strip main body part. On both sides of the upper end surface of the sealing strip main body part, a reinforcing sealing strip is respectively provided. The design that the reinforcing sealing strip and the sealing strip main body part are integrally formed by rubber is the fifth technical feature of the present utility model. The purpose of such design is as follows: First, a cavity is provided inside the sealing strip main body part, enabling the sealing strip to have better flexibility, thereby further improving the sealing effect of the sealing strip; second, a reinforcing sealing strip is respectively provided on both sides of the upper end surface of the sealing strip main body part, so that triple sealing contact is formed between the sealing strip and the mining-type switch cabinet body, thereby greatly improving the sealing effect of the sealing strip.

[0010] 6. A door lock is provided on the other side of the door panel; the design that a positioning rod is provided between the inner wall surface of the "mouth"-shaped door panel frame and the outer wall surface of the "mouth"-shaped sealing plate is the sixth technical feature of the present utility model. The purpose of such design is as follows: A door lock is provided on the other side of the door panel; a positioning rod is provided between the inner wall surface of the "mouth"-shaped door panel frame and the outer wall surface of the "mouth"-shaped sealing plate. When the protective door is closed on the mining-type switch cabinet body, the positioning rod and the positioning groove provided on the mining-type switch cabinet body achieve concave-convex fit, so as to ensure that the door lock is aligned with the lock catch located on the mining-type switch cabinet body, thereby improving the use effect of the protective door structure of a mining-type switch cabinet.

[0011] Technical solution: A protective door structure for a mine-used switch cabinet includes a door panel and a glass plate. A window is provided in the exact middle of the door panel, and the window penetrates through the inner and outer sides of the door panel. At the four sides of the inner side of the door panel, there is a frame plate respectively, and the four frame plates form a "mouth"-shaped door panel frame. The length of the glass plate is greater than the length of the window, and the width of the glass plate is greater than the width of the window. Four mounting brackets distributed in a "mouth" shape are provided on the inner side of the door panel, and the four mounting brackets distributed in a "mouth" shape are located between the "mouth"-shaped door panel frame and the window. A glass pressing plate for pressing the back surface of the glass plate is installed on each of the four mounting brackets. The glass plate covers the window under the pressing of the four glass pressing plates, and the glass plate is arranged on the inner side of the door panel. An "mouth"-shaped sealing plate is provided outside the four mounting brackets distributed in a "mouth" shape, and an "mouth"-shaped sealing strip is provided on the upper end surface of the "mouth"-shaped sealing plate. The outer side of the "mouth"-shaped sealing strip is higher than the outer side of the "mouth"-shaped door panel frame.

[0012] Compared with the background technology, the utility model has two advantages. First, the protective door structure of the mine-used switch cabinet not only has better and longer-lasting sealing effect, but also can reduce the opening and closing noise. Second, the protective door structure of the mine-used switch cabinet not only has good structural strength, but also has low production cost. Brief description of the drawings

[0013] Figure 1 It is a rear view structural schematic diagram of the protective door structure of the mine-used switch cabinet.

[0014] Figure 2 It is Figure 1 The sectional structural schematic diagram at A-A in

[0015] Figure 3 It is Figure 2 The enlarged view of the circled part in

[0016] Figure 4 It is Figure 1 The sectional structural schematic diagram at B-B in

[0017] Figure 5 It is a three-dimensional structural schematic diagram of the protective door structure of the mine-used switch cabinet in the front view state.

[0018] Figure 6 It is a three-dimensional structural schematic diagram of the protective door structure of the mine-used switch cabinet in the rear view state. Detailed implementation manners

[0019] Embodiment 1: Refer to the attached Figures 1-6。The protective door structure of a mine-used switch cabinet includes a door panel 1 and a glass panel 2. A window 3 is provided in the exact middle of the door panel 1, and the window 3 penetrates through the inner and outer side surfaces of the door panel 1. A border plate is respectively provided at the four sides of the inner side surface of the door panel 1, and the four border plates form a "square" - shaped door panel border 4. The length of the glass panel 2 is greater than the length of the window 3, and the width of the glass panel 2 is greater than the width of the window 3. Four mounting brackets 5 distributed in a "square" shape are provided on the inner side surface of the door panel 1, and the four mounting brackets 5 distributed in a "square" shape are located between the "square" - shaped door panel border 4 and the window 3. A glass pressing plate 6 for pressing the back surface of the glass panel 2 is respectively mounted on the four mounting brackets 5. The glass panel 2 covers the window 3 under the pressing of the four glass pressing plates 6, and the glass panel 2 is arranged on the inner side surface of the door panel 1. An "square" - shaped sealing plate 7 is provided outside the four mounting brackets 5 distributed in a "square" shape, and an "square" - shaped sealing strip 8 is provided on the upper end surface of the "square" - shaped sealing plate 1. The outer side surface of the "square" - shaped sealing strip 8 is higher than the outer side surface of the "square" - shaped door panel border 4. The four border plates 4 are formed by bending the four side edges of the door panel.

[0020] The "square" - shaped sealing plate 7 is hermetically welded to the inner side surface of the door panel 1. The mounting bracket 5 is an L - shaped plate. The outer end surface of the horizontal plate 51 in the L - shaped plate is welded to the inner wall surface of the corresponding side in the "square" - shaped sealing plate 7, and the outer end surface of the vertical plate 52 in the L - shaped plate is welded to the inner side surface of the door panel 1. A plurality of riveting holes one are provided on the upper end surface of the horizontal plate 51, and the riveting holes one penetrate through the upper and lower end surfaces of the horizontal plate 51. A plurality of riveting holes two are provided on the upper end surface of the mounting plate section 61 in the glass pressing plate 6, and the riveting holes two penetrate through the upper and lower end surfaces of the mounting plate section 61. After the riveting holes two are aligned with the corresponding riveting holes one, the glass pressing plate 6 is fixedly connected to the corresponding mounting bracket 5 through rivets. At this time, the pressing plate section 63 in the glass pressing plate 6 presses one side surface of the glass panel 2, and the other side surface of the glass panel 2 is in sealing contact with the inner side surface of the door panel 1.

[0021] The thickness of the glass panel 2 is less than the thickness of the mounting bracket 5. The glass pressing plate 6 is composed of a mounting plate section 61, a connecting plate section 62, and a pressing plate section 63. One end of the connecting plate section 62 is fixedly connected to one end of the mounting plate section 61, and the other end of the connecting plate section 62 is fixedly connected to one end of the pressing plate section 63. The mounting plate section 61 and the pressing plate section 63 are arranged in parallel.

[0022] The "口"-shaped sealing strip 8 is composed of a sealing strip main body 81 and a sealing strip installation part 82, and the sealing strip main body 81 and the sealing strip installation part 82 are integrally formed of rubber. The lower end surface of the sealing strip installation part 82 is provided with a "口"-shaped groove 83 matching the "口"-shaped sealing plate 7. The "口"-shaped sealing strip 8 is installed on the "口"-shaped sealing plate 7 through the "口"-shaped groove 83 and the upper end of the "口"-shaped sealing plate 7. At this time, the outer side surface of the sealing strip main body 81 in the "口"-shaped sealing strip 8 is higher than the outer side surface of the "口"-shaped door panel frame 4. A cavity 84 is provided inside the sealing strip main body 81, and a reinforcing sealing strip 85 is respectively provided on both sides of the upper end surface of the sealing strip main body 81. The reinforcing sealing strip 85 and the sealing strip main body 81 are integrally formed of rubber.

[0023] One side of the door panel 1 is provided with two door rotating sleeves 9, which are prior art and thus will not be described in detail here. The other side of the door panel 1 is provided with a door lock 10, which is prior art and thus will not be described in detail here. A positioning rod 11 is provided between the inner wall surface of the "口"-shaped door panel frame 4 and the outer wall surface of the "口"-shaped sealing plate 7.

[0024] Technical and safety performance requirements for high and low voltage switchgear for mines

[0025] Dustproof, moisture-proof and explosion-proof requirements: Since there is a lot of dust, moisture, flammable gas and other conditions at the mining site, the switch cabinet is required to have dustproof, moisture-proof and explosion-proof properties; the protection level of the product casing is IP43.

[0026] Durability requirements for the shell: Due to the long operation time and harsh environment in mines, general high and low voltage switchgear for mines needs to have high durability and be able to work for a long time in harsh environments. The shell material of the product is required to have good environmental performance, the surface is treated with anti-corrosion technology, and the mechanical strength of the structure reaches IK10.

[0027] Safety and reliability requirements: 1) Meet the requirements of electrical safety performance standards. The five-prevention interlock is reliable, which can ensure the personal safety of users during the use process. 2) The switchgear should be equipped with remote signal alarms so that problems can be detected and measures can be taken in a timely manner when repair or maintenance is needed. 3) The switchgear has multiple safety protection functions such as overload protection, short-circuit protection, leakage protection, and grounding protection to ensure its safety during use. 4) The grounding wire inside the switchgear needs to be connected to a reliable grounding point to ensure electrical safety. 5) The outer shell needs to be made of fireproof and flame-retardant materials with a certain mechanical strength; 6) The selection of insulating materials ensures their electrical performance and prevents electrical safety hazards such as electric leakage caused by poor mine operating conditions; 7) Each component is independent of each other and can be used interchangeably. 8) It has a temperature protection function. When the internal temperature of the switchgear exceeds a certain level, the power supply can be automatically cut off to ensure the safety of the electrical components inside the switchgear. Product reference standard: GB / T 12173-2008 "General-purpose Mine Electrical Equipment".

[0028] It should be understood that although the above embodiments have made relatively detailed written descriptions of the design concept of the present invention, these written descriptions are only simple written descriptions of the design concept of the present invention, rather than limitations on the design concept of the present invention. Any combination, addition, or modification that does not exceed the design concept of the present invention falls within the protection scope of the present invention.

Claims

1. A protective door structure for a mine-used switch cabinet, comprising a door panel (1) and a glass panel (2). A window (3) is provided in the exact middle of the door panel (1), and the window (3) penetrates through the inner and outer side surfaces of the door panel (1). A border plate is respectively provided at the four sides of the inner side surface of the door panel (1), and the four border plates form a "mouth"-shaped door panel border (4). The length of the glass panel (2) is greater than the length of the window (3), and the width of the glass panel (2) is greater than the width of the window (3). It is characterized in that: On the inner side of the door panel (1), there are four mounting brackets (5) distributed in a "square" shape, and the four mounting brackets (5) distributed in a "square" shape are located between the "square"-shaped door panel frame (4) and the window (3). A glass pressing plate (6) for pressing the back surface of the glass plate (2) is respectively mounted on the four mounting brackets (5). The glass plate (2) covers the window (3) under the pressing of the four glass pressing plates (6), and the glass plate (2) is arranged on the inner side of the door panel (1). On the outer side of the four mounting brackets (5) distributed in a "square" shape, there is a "square"-shaped sealing plate (7), and on the upper end surface of the "square"-shaped sealing plate (7), there is a "square"-shaped sealing strip (8). The outer side surface of the "square"-shaped sealing strip (8) is higher than the outer side surface of the "square"-shaped door panel frame (4).

2. The protective door structure of a mine-used switch cabinet according to claim 1, characterized in that: The "square"-shaped door panel frame (4) is formed by bending the four side edges of the door panel.

3. The protective door structure of a mining switch cabinet according to claim 1, characterized in that: The "square"-shaped sealing plate (7) is hermetically welded to the inner side surface of the door panel (1). The mounting bracket (5) is an L-shaped plate. The outer end surface of the horizontal plate (51) in the L-shaped plate is welded to the inner wall surface of the corresponding side in the "square"-shaped sealing plate (7), and the outer end surface of the vertical plate (52) in the L-shaped plate is welded to the inner side surface of the door panel (1). On the upper end surface of the horizontal plate (51), there are a plurality of riveting holes one, and the riveting holes one penetrate through the upper and lower end surfaces of the horizontal plate (51). On the upper end surface of the mounting plate section (61) in the glass pressing plate (6), there are a plurality of riveting holes two, and the riveting holes two penetrate through the upper and lower end surfaces of the mounting plate section (61). After the riveting holes two are aligned with the corresponding riveting holes one, the glass pressing plate (6) is fixedly connected to the corresponding mounting bracket (5) through rivets. At this time, the pressing plate section (63) in the glass pressing plate (6) presses one side surface of the glass plate (2), and the other side surface of the glass plate (2) is in sealing contact with the inner side surface of the door panel (1).

4. The protective door structure of a mining switch cabinet according to claim 3, characterized in that: The thickness of the glass plate (2) is less than the thickness of the mounting bracket (5). The glass pressing plate (6) is composed of a mounting plate section (61), a connecting plate section (62), and a pressing plate section (63). One end of the connecting plate section (62) is fixedly connected to one end of the mounting plate section (61), and the other end of the connecting plate section (62) is fixedly connected to one end of the pressing plate section (63). The mounting plate section (61) and the pressing plate section (63) are arranged in parallel.

5. The protective door structure of a mine-use switch cabinet according to claim 1, characterized in that: The "square"-shaped sealing strip (8) is composed of a sealing strip main body part (81) and a sealing strip mounting part (82), and the sealing strip main body part (81) and the sealing strip mounting part (82) are integrally formed by rubber. On the lower end surface of the sealing strip mounting part (82), there is a "square"-shaped groove (83) matching the "square"-shaped sealing plate (7). The "square"-shaped sealing strip (8) is installed on the "square"-shaped sealing plate (7) through the plug-in fit of the "square"-shaped groove (83) and the upper end head of the "square"-shaped sealing plate (7). At this time, the outer side surface of the sealing strip main body part (81) in the "square"-shaped sealing strip (8) is higher than the outer side surface of the "square"-shaped door panel frame (4).

6. The protective door structure of a mine-used switch cabinet according to claim 5, characterized in that: A cavity (84) is provided inside the sealing strip main body (81). On both sides of the upper end surface of the sealing strip main body (81), a reinforcing sealing strip (85) is provided respectively. The reinforcing sealing strip (85) and the sealing strip main body (81) are integrally formed by rubber.

7. The protective door structure of a mining switch cabinet according to claim 1, characterized in that: On one side of the door panel (1), two door rotating sleeves (9) are provided. On the other side of the door panel (1), a door lock (10) is provided.

8. The protective door structure of a mine-used switch cabinet according to claim 1, characterized in that: A positioning rod (11) is provided between the inner wall surface of the "mouth"-shaped door panel frame (4) and the outer wall surface of the "mouth"-shaped sealing plate (7).

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