A mine-use explosion-proof and intrinsically safe dual power supply switching control box

Abstract

The present invention discloses a flameproof and intrinsically safe dual power switching control box for mining, comprising a box structure as a basis, detection and observation structures are provided on both sides of the box structure, and a wrapping protection structure is provided in front of the box structure, the box structure comprises a power control box as a main body, and a through groove is provided inside the power control box for facilitating the matching installation of parts, and at the same time, a connecting groove is provided in front of the power control box for facilitating the adsorption connection of parts of the wrapping protection structure, a connecting plate is fixed on the upper part of the power control box, and a connecting bridge block is fixed on the connecting plate, and at the same time, a matching groove is provided on the inner side of the connecting bridge block, and connecting cylinders electrically connected to the connecting block are inlaid and installed on both sides and the bottom of the connecting bridge block. This flameproof and intrinsically safe dual power switching control box for mining plays a matching adsorption connection role through the provided connecting groove.

Description

Technical Field

[0001] The invention relates to the technical field of a mine-used flameproof and intrinsically safe dual-power supply switching control box, in particular to a mine-used flameproof and intrinsically safe dual-power supply switching control box. Background Art

[0002] The explosion-proof control box shell is made of steel plate welding or cast aluminum alloy or 304 stainless steel die-casting, and the surface is high-voltage electrostatic sprayed. The overall product generally adopts a composite structure composed of a flameproof shell and an increased safety shell. After searching, it was found that the publication number in the existing public technology is: CN117241520A, a mine-use flameproof and intrinsically safe dual-power switching control box, which relates to the technical field of mine electric control boxes, including a power cabinet, a sealed box door is provided on one side of the power cabinet, and a display positioning mechanism is provided inside the sealed box door. The display positioning mechanism positions the display to facilitate replacement and maintenance of the display. Lifting ears are symmetrically provided on the left and right sides of the power cabinet; cable conduits are symmetrically arranged on both sides of the power cabinet, a top cover is provided on the top of the power cabinet, and a control button is provided on the outside of the sealed box door. The blower is used to draw air into the power cabinet. On the one hand, the air and dust inside the power cabinet are mechanically filtered, the dust in the air is filtered and the water vapor in the air is dried at the same time, so as to avoid excessive moisture content in the air inside the power cabinet and extend the service life of precision instruments and precision components in the electric control box.

[0003] To sum up: Although the above case is equipped with ventilation and drying and clamping replacement structures, when the internal equipment of the control box is damaged and the box is energized, it is inconvenient to disconnect the power supply. Maintenance personnel are prone to electric shock when touching the box door. In addition, the control buttons in the above case are exposed to the outside of the box, which causes dust and moisture to penetrate into the inside of the box through the control buttons. Summary of the Invention

[0004] The purpose of the present invention is to address the shortcomings of the existing technology and provide a mining explosion-proof and intrinsically safe dual-power switching control box to solve the problem that although the above case proposed in the above background technology is equipped with a ventilation and drying and clamping replacement structure, when the internal equipment of the control box is damaged and the box is energized, it is inconvenient to disconnect the power supply, and maintenance personnel are prone to electric shock when touching the box door. In addition, the control buttons in the above case are exposed to the outside of the box, which causes dust and moisture to penetrate into the inside of the box through the control buttons.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a flameproof and intrinsically safe dual power supply switching control box for mining, comprising a box structure as a base, detection and observation structures provided on both sides of the box structure, and a wrapping protection structure provided in front of the box structure;

[0006] The box structure includes a power control box as a main body, and a through groove is opened inside the power control box for facilitating the installation of parts and components. At the same time, a connection groove is opened in the front of the power control box for facilitating the adsorption connection of the wrapped protective structure parts.

[0007] By adopting the above technical solution, the connection groove is opened to achieve a matching adsorption connection.

[0008] Preferably, a connecting plate is fixed on the upper part of the power control box, and a connecting bridge block is fixed on the connecting plate. At the same time, a matching groove is opened on the inner side of the connecting bridge block, and connecting cylinders electrically connected to the connecting block are embedded and installed on both sides and the bottom of the connecting bridge block.

[0009] By adopting the above technical solution, the connecting bridge blocks are provided to achieve opening and fixed installation.

[0010] Preferably, the connecting block and the matching groove are slidably matched with the conductive block, and a bearing seat is installed on the rear side of the conductive block. At the same time, the bearing seat is installed with a handwheel threaded rod passing through the threaded barrel, and the threaded barrel is installed with the power control box through the through slot.

[0011] By adopting the above technical solution, the handwheel threaded rod is provided to achieve rotation adjustment.

[0012] Preferably, the detection and observation structure includes a glass tube with a hollow interior, and a conductive rod is embedded and installed at one end of the glass tube, and a resistor is installed inside the glass tube and is in contact with one end of the conductive rod.

[0013] By adopting the above technical solution, the glass tube is installed to allow light to pass through.

[0014] Preferably, the other end of the resistor is in contact with one end of the neon tube, and the other end of the neon tube is in contact with one end of the connecting spring, while the other end of the connecting spring is in contact with one end of the conductive member, and the conductive member is embedded in the other end of the glass tube.

[0015] By adopting the above technical solution, the two ends are contact-connected by the provided connecting spring.

[0016] Preferably, a conductive wire is electrically installed at the other end of the conductive member, and the other end of the conductive wire is electrically connected to the grounding block, and a through hole for fixed connection is opened through the grounding block.

[0017] By adopting the above technical solution, the conductive wire is provided to achieve transmission and delivery.

[0018] Preferably, the glass tube is fixed to both sides of the power control box through through-hole blocks, and reflective plates are fixed to both sides of the power control box for easy observation by the operator.

[0019] By adopting the above technical solution, the reflective plate is provided to achieve refracting and reflecting light.

[0020] Preferably, the wrapping protective structure includes a connecting frame with a hollow structure inside, and the connecting frame is penetrated by a mounting hole for convenient inlaying and installation of the silicone protective cover. At the same time, a partition is fixed inside the connecting frame, and a magnetic strip is laid on the rear side of the connecting frame which is adsorbed and connected to the connecting groove.

[0021] By adopting the above technical solution, magnetic adsorption is achieved through the provided magnetic strips.

[0022] Preferably, the connection shape between the connecting block and the connecting tube is "T".

[0023] By adopting the above technical solution, the provided connecting blocks can achieve contact and electrical conduction.

[0024] Compared with the prior art, the beneficial effects of the present invention are: the mine flameproof and intrinsically safe dual power supply switching control box,

[0025] (1) This case solves the problem that although ventilation and drying and clamping replacement structures are provided in the above cases, when the internal equipment of the control box is damaged and the box is electrified, it is inconvenient to disconnect the power supply, and maintenance personnel are prone to electric shock when touching the box door. When the surface of the power control box leaks electricity, the current is transmitted to the resistor, the luminous neon tube and the connecting spring through the conductive rod. At this time, the current is transmitted to the conductive wire and the grounding block through the connecting spring to form a path. At this time, the luminous neon tube emits light. When the maintenance personnel approach the power control box and observe the light source through the reflector, they can avoid touching the power control box directly with their hands, which may cause electric shock to the maintenance personnel.

[0026] (2) The above situation is solved by the following means: connecting bridge block, connecting block, matching groove, connecting cylinder, conductive block, bearing seat, handwheel threaded rod and threaded cylinder provided in the power control box. When the maintenance personnel know that there is leakage on the surface of the power control box, they turn the handwheel threaded rod toward the rear side of the power control box to force the conductive block to separate from the connecting block and the connecting bridge block. At this time, when no path can be formed between the connecting block and the wire, the power supply to the entire power control box is cut off, thereby protecting the safety of the maintenance personnel during operation.

[0027] (3) By setting up a wrapping protection structure, the problem in the above case where the control button is exposed to the outside of the box, which causes dust and moisture to penetrate into the inside of the box through the control button, is solved. When the control button needs to be used, the operator uses the connection cover and the magnetic strip to make the connection cover and the connection slot match and adsorb. At this time, the silicone protective cover wraps the control button for protection. When the silicone protective cover wraps the control button for protection, it not only prevents the operator from directly contacting the control button with water or sweat on his hands, causing electric shock. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the front cross-sectional structure of the present invention;

[0029] Figure 2 This is a schematic structural diagram of the power control box, connecting plate, connecting bridge block, connecting block, connecting cylinder and conductive block of the present invention;

[0030] Figure 3 For the present invention Figure 2 A in the middle is an enlarged structural diagram;

[0031] Figure 4 This is a schematic structural diagram of the connecting bridge block, matching groove, connecting block, connecting cylinder and conductive block of the present invention;

[0032] Figure 5 This is a schematic structural diagram of the bearing seat, threaded barrel and handwheel threaded rod of the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the glass tube, conductive rod, resistor, luminous neon tube, connecting spring, conductive member, conductive wire and reflector of the present invention;

[0034] Figure 7 For the present invention Figure 6 The enlarged structural diagram at B in the middle;

[0035] Figure 8 This is a schematic diagram of the structure of the silicone protective cover, partition and magnetic strip of the present invention;

[0036] Figure 9 For the present invention Figure 8 Enlarged structural diagram at point C in the middle.

[0037] In the figure: 1. Box structure; 101. Power control box; 102. Connecting slot; 103. Connecting plate; 104. Connecting bridge block; 105. Matching slot; 106. Connecting block; 107. Connecting cylinder; 108. Conductive block; 109. Bearing seat; 1010. Threaded cylinder; 1011. Handwheel threaded rod; 2. Detection and observation structure; 201. Glass tube; 202. Conductive rod; 203. Resistor; 204. Light-emitting neon tube; 205. Connecting spring; 206. Conductive part; 207. Conductive wire; 208. Grounding block; 209. Through hole; 2010. Reflector; 3. Wrapping protection structure; 301. Connecting frame; 302. Silicone protective cover; 303. Partition; 304. Magnetic strip. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] See also Figure 1-9 The present invention provides a technical solution: a mine flameproof and intrinsically safe dual power supply switching control box, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, it includes a box structure 1 as a basis, and the box structure 1 includes a power control box 101 as a main body, and a through groove is opened inside the power control box 101 to facilitate the installation of parts and components. At the same time, a connection groove 102 is opened in the front of the power control box 101 to facilitate the adsorption and connection of the parts of the wrapping protection structure 3. Among them, the power control box 101 adopts the structure in the comparative document to set the power control box 101, and the structure in the comparative document is used to set the power control box 101 in this case, thereby ensuring the overall use of the power control box 101.

[0040] Furthermore, the above scheme has a connecting plate 103 fixed on the upper part of the power control box 101, and a connecting bridge block 104 is fixed on the connecting plate 103. At the same time, a matching groove 105 is opened on the inner side of the connecting bridge block 104. Connecting tubes 107 electrically connected to the connecting block 106 are embedded and installed on both sides and below the connecting bridge block 104. The connection shape of the connecting block 106 and the connecting tube 107 is set in a "T" shape. When the above two are set in a "T" shape, it not only reflects the embedded connectivity of the above two installation settings, but also reflects the conductive connectivity of the above two installation settings. When the above two are set in a "T" shape, it also reflects the practicality of the above two installation settings and the axial and longitudinal axis symmetry. There are three of the above two. When the above two are set in three, the connection path on both sides of the power control box 101 or the connection path on one side of the power control box 101 is guaranteed.

[0041] The above scheme further provides that the connecting block 106 and the matching groove 105 are slidably matched with the conductive block 108, and a bearing seat 109 is installed on the rear side of the conductive block 108. At the same time, the bearing seat 109 is installed with a handwheel threaded rod 1011 that passes through the threaded barrel 1010. The threaded barrel 1010 is installed with the power control box 101 through the through groove. Among them, the bearing seat 109, the threaded barrel 1010 and the handwheel threaded rod 1011 are all arranged in a plastic structure. When the above three are arranged in a plastic structure, not only the non-electrical property of the above three is guaranteed, but also the practicality of the above three is guaranteed.

[0042] like Figure 6 and Figure 7 As shown, detection and observation structures 2 are provided on both sides of the box structure 1. The detection and observation structure 2 includes a glass tube 201 with a hollow structure inside, and a conductive rod 202 is embedded and installed at one end of the glass tube 201. At the same time, a resistor 203 is installed inside the glass tube 201 and is in contact with one end of the conductive rod 202. Among them, the glass tube 201 is made of flame-retardant and thick materials. When the glass tube 201 is made of flame-retardant and thick materials, it not only extends the service life of the glass tube 201 but also ensures that light passes through the glass tube 201 and is refracted on the reflector 2010.

[0043] Furthermore, the other end of the resistor 203 is in contact with one end of the light-emitting neon tube 204, and the other end of the light-emitting neon tube 204 is in contact with one end of the connecting spring 205. At the same time, the other end of the connecting spring 205 is in contact with one end of the conductive member 206, and the conductive member 206 is embedded and connected to the other end of the glass tube 201.

[0044] Furthermore, the above scheme has a conductive wire 207 electrically installed at the other end of the conductive member 206, and the other end of the conductive wire 207 is electrically connected to the grounding block 208. At the same time, the grounding block 208 is penetrated by a through hole 209 for fixed connection. The above components form a path during the power-on process, and the above components form a path to detect leakage on the surface of the power control box 101, thereby avoiding the risk of electric shock when the hand touches the power control box 101.

[0045] Furthermore, the glass tube 201 is fixed to both sides of the power control box 101 through through-hole blocks, and reflective plates 2010 are fixed to both sides of the power control box 101 for easy observation by the operator.

[0046] like Figure 8 and Figure 9 As shown, a wrapping protection structure 3 is provided in front of the box structure 1, and the wrapping protection structure 3 includes a connecting frame 301 with a hollow structure inside, and the connecting frame 301 is penetrated by a mounting hole for convenient installation of the silicone protective cover 302. At the same time, a partition 303 is fixed inside the connecting frame 301, and a magnetic strip 304 adsorbed and connected to the connecting groove 102 is laid on the back side of the connecting frame 301. Among them, the silicone protective cover 302 adopts a soft silicone setting. When the silicone protective cover 302 is set with soft silicone, it is not only convenient for the operator to press the control button through the silicone protective cover 302, but also provides isolation protection for the control button and prevents the operator's hands with water or sweat from directly contacting the control button.

[0047] In the above scheme, the operator operates the control button through the silicone protective cover 302. When the surface of the power control box 101 leaks electricity, the current is transmitted to the resistor 203, the light-emitting neon tube 204 and the connecting spring 205 through the conductive rod 202. At this time, when the current is transmitted to the conductive wire 207 and the grounding block 208 through the connecting spring 205 to form a path, the light-emitting neon tube 204 emits light. When the maintenance personnel approach the power control box 101 and observe the light source through the reflector 2010, they can avoid directly touching the power control box 101 with their hands and causing electric shock to the maintenance personnel. Then, the maintenance personnel rotates the handwheel threaded rod 1011 to the back side of the power control box 101 to drive the conductive block 108 to separate from the connecting block 106 and the connecting bridge block 104 by force. At this time, when no path can be formed between the connecting block 106 and the wire, the entire power control box 101 is powered off, thereby protecting the safety of the maintenance personnel during operation.

[0048] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the protection content of the present invention.

[0049] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A mine flameproof and intrinsically safe dual power switching control box, characterized by: It comprises a box structure (1) as a basis and a connecting block (106), wherein detection and observation structures (2) are provided on both sides of the box structure (1), and a wrapping protection structure (3) is provided directly in front of the box structure (1); The box structure (1) includes a power control box (101) as a main body, and a through slot is provided inside the power control box (101) for facilitating the installation of components. At the same time, a connection slot (102) is provided in front of the power control box (101) for facilitating the adsorption connection of components of the wrapping protection structure (3). A connecting plate (103) is fixed on the upper part of the power control box (101), and a connecting bridge block (104) is fixed on the connecting plate (103). A matching groove (105) is provided on the inner side of the connecting bridge block (104). Connecting cylinders (107) electrically connected to the connecting block (106) are embedded and installed on both sides and the bottom of the connecting bridge block (104). The connecting block (106) and the matching groove (105) are slidably matched with the conductive block (108), and a bearing seat (109) is installed on the rear side of the conductive block (108). At the same time, the bearing seat (109) is installed with a handwheel threaded rod (1011) passing through the threaded barrel (1010), and the threaded barrel (1010) is matched with the power control box (101) through the through groove.

2. The flameproof and intrinsically safe dual power switching control box for mining according to claim 1 is characterized in that: The detection and observation structure (2) comprises a glass tube (201) with a hollow interior, a conductive rod (202) being embedded and installed at one end of the glass tube (201), and a resistor (203) being installed inside the glass tube (201) and being in contact with one end of the conductive rod (202).

3. The flameproof and intrinsically safe dual power switching control box for mining according to claim 2 is characterized in that: The other end of the resistor (203) is in contact with one end of the light-emitting neon tube (204), and the other end of the light-emitting neon tube (204) is in contact with one end of the connecting spring (205). At the same time, the other end of the connecting spring (205) is in contact with one end of the conductive member (206), and the conductive member (206) is inlaid and connected with the other end of the glass tube (201).

4. The flameproof and intrinsically safe dual power switching control box for mining according to claim 3 is characterized by: The other end of the conductive member (206) is electrically mounted with a conductive wire (207), and the other end of the conductive wire (207) is electrically connected to a grounding block (208). Meanwhile, a through hole (209) for fixed connection is provided through the grounding block (208).

5. The flameproof and intrinsically safe dual power switching control box for mining according to claim 2, characterized in that: The glass tube (201) is fixed to both sides of the power control box (101) via through-hole blocks, and reflective plates (2010) are fixed to both sides of the power control box (101) for easy observation by an operator.

6. The flameproof and intrinsically safe dual power switching control box for mining according to claim 1, characterized in that: The wrapping protective structure (3) comprises a connecting frame (301) with a hollow structure inside, and a mounting hole is provided through the connecting frame (301) for convenient installation of the silicone protective cover (302). A partition (303) is fixed inside the connecting frame (301), and a magnetic strip (304) is laid on the rear side of the connecting frame (301) for adsorption connection with the connecting groove (102).

7. The flameproof and intrinsically safe dual power switching control box for mining according to claim 6, characterized in that: The connection shape of the connecting block (106) and the connecting tube (107) is set in a "T" shape.

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