An explosion-proof charging machine for underground coal mine

Abstract

The application relates to the field of charging machines, and particularly discloses an explosion-proof charging machine for underground coal mines, which comprises a bottom plate, supporting legs, a box body, a power supply module and a heat dissipation module. The supporting legs are arranged in a matrix on the upper end surface of the bottom plate, and the box body is fixedly connected to the upper end of the supporting legs. The power supply module is arranged in the box body, and the heat dissipation module is arranged on the rear wall of the box body. The explosion-proof charging machine solves the problems that the existing charging machine cannot automatically cut off power supply when the machine shell is manually opened for maintenance, which threatens the personal safety of the maintenance personnel, and that the charging efficiency is reduced or even explosion is caused when excessive heat is accumulated in the charging machine and cannot be dissipated in time, thereby causing damage to the charging area equipment and the charging machine itself, and the explosion-proof performance of the charging machine is reduced due to the invasion of natural elements such as moisture in a harsh environment.

Description

Technical Field

[0001] This invention relates to the field of chargers, specifically an explosion-proof charger for use in underground coal mines. Background Technology

[0002] This charger utilizes high-frequency power supply technology and advanced intelligent dynamic adjustment charging technology. It employs a three-stage intelligent charging method: constant current, constant voltage, and low constant current. It features high charging efficiency, simple operation, light weight, and small size. The charger also has scientific charging power control technology, automatically shutting off when the battery is fully charged to ensure proper battery function, preventing overcharging and undercharging. It is suitable for electric pallet trucks, electric lifting trucks, electric pallet trucks, stackers, forklifts, golf carts, electric sightseeing vehicles, and starting batteries for automobiles, tanks, and small to medium-sized generator sets.

[0003] Existing underground chargers used in coal mines encounter the following problems during practical application:

[0004] a. If the charger malfunctions during its own charging process, it is necessary to manually open the casing for inspection and maintenance. However, the charger cannot automatically cut off power after the casing is opened manually, which may threaten the personal safety of the maintenance personnel.

[0005] b. During the charging process, the charger will generate a lot of heat. When the heat accumulates too much and cannot be dissipated in time, it will easily reduce its charging efficiency and may also cause an explosion, which will lead to damage to the charging area equipment and the charger itself.

[0006] c. The operating environment of explosion-proof chargers used in underground coal mines is relatively harsh and the conditions are also relatively complex. During operation, they are corroded by natural elements such as humid air, dust and water, which changes their actual explosion-proof structure. If the explosion-proof shell is not treated or replaced in time, the explosion-proof strength of the shell will decrease when the equipment malfunctions, which will seriously threaten the basic safety of the relevant technical personnel. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides an explosion-proof charger for underground coal mines. It solves the problems of existing chargers failing to automatically shut off power when the casing is manually opened for inspection and maintenance, posing a threat to the safety of maintenance personnel; the accumulation of excessive internal heat during charging, which can reduce charging efficiency or even cause explosions, leading to damage to equipment in the charging area and the charger itself; and the reduced explosion-proof performance of the charger due to corrosion from moisture and other natural elements in harsh environments.

[0008] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: an explosion-proof charger for underground coal mines, including a base plate, legs, a housing, a power supply module and a heat dissipation module. The upper surface of the base plate is provided with legs arranged in a matrix, and the upper end of the legs is fixedly connected to the housing. The power supply module is provided inside the housing, and the heat dissipation module is installed on the rear side wall of the housing.

[0009] The enclosure includes a buffer assembly, a door, an observation port, a charging port, a handle, and a cable fixing assembly. Buffer assemblies are symmetrically arranged on the left and right side walls of the enclosure. A door is hinged to the left end of the front side wall of the enclosure. A handle is fixedly connected to the middle of the front side wall of the door near the right end. An observation port is opened near the top of the door. A charging port is opened below the observation port. Cable fixing assemblies are arranged inside the two side walls above the charging port.

[0010] The power supply module includes a control component, a battery, a parameter display screen, a temperature control component, a charging connector, and signal indicator lights. The battery is placed inside the enclosure. A parameter display screen is located on the front side wall of the battery. Charging connectors are evenly installed from left to right below the parameter display screen, and each charging connector is connected to a signal indicator light. A control component is located on the upper surface of the battery, and its front end is fixedly connected to the enclosure door. A temperature control component is installed on the upper surface of the battery near the right side, and its right end is fixedly installed on the side wall of the enclosure.

[0011] Preferably, the buffer assembly includes an elastic rubber frame and silicone aerogel blocks, wherein the elastic rubber frame is fixedly connected to the left and right side walls of the box, and silicone aerogel blocks are evenly arranged from top to bottom on the inner side wall of the elastic rubber frame.

[0012] Preferably, the elastic rubber frame is a side-opening frame structure with the opening facing the side wall of the box and fixedly connected to the box.

[0013] Preferably, the inner sidewalls of the left and right sides of the box are provided with deep grooves, and ventilation holes are opened on the sidewalls of the deep grooves. The end of the silicone aerogel block away from the elastic rubber frame is covered on the outside of the deep groove.

[0014] Preferably, the cable fixing assembly includes a mounting groove, a compression spring, a T-shaped rod, and an arc-shaped cable fixing plate. The mounting grooves are evenly provided from left to right inside the upper and lower side walls of the charging port. The T-shaped rod is slidably installed inside the mounting groove by the compression spring. The end of the T-shaped rod away from the compression spring extends to the outside of the mounting groove and is fixedly connected to the arc-shaped cable fixing plate.

[0015] Preferably, the control component includes an external cable, a contact, a vertical rod, a first magnetic block, a rectangular groove, a compression spring, an insulating rope, a guide pulley, an elastic rod, a limiting ring, and a limiting wheel. A rectangular groove is formed in the middle of the upper surface of the battery block. A first magnetic block is slidably positioned near the middle of the rectangular groove. A compression spring is installed between the left side wall of the first magnetic block and the left side wall of the rectangular groove. A vertical rod is fixedly connected to the upper end of the first magnetic block, and a contact is fixedly connected to the upper end of the vertical rod. An external cable is fixedly connected to the left side wall of the contact. A guide pulley is installed on the left side wall of the housing on the left side of the rectangular groove. An insulating rope is attached to the vertical rod, passing sequentially around the guide pulley and the limiting wheel and fixedly connected to the elastic rod. The front end of the elastic rod abuts against the housing door. A limiting ring is slidably fitted onto the elastic rod, and the left end of the limiting ring is fixedly connected to the left side wall inside the housing.

[0016] Preferably, the temperature control component includes a temperature sensor, a wire, a controller, an electric slider, and a second magnetic block. The electric slider is slidably disposed near the right end of the rectangular groove. The second magnetic block is fixedly connected to the left end of the electric slider. The controller is fixedly installed on the upper end of the electric slider. The temperature sensor is installed on the inner wall of the housing to the right of the controller. The temperature sensor and the controller are connected by a wire.

[0017] Preferably, the right end of the first magnetic block and the left end of the second magnetic block have the same polarity. When the temperature inside the explosion-proof charger in the coal mine is too high, the second magnetic block will move closer to the first magnetic block. The repulsive effect of the second magnetic block on the first magnetic block will cause the first magnetic block to move to the left, thereby stopping the battery from receiving power.

[0018] Preferably, the heat dissipation module includes an inverted heat absorption plate, heat conducting rods, V-shaped heat sinks, a heat dissipation shell, an air inlet duct, a cross mounting bracket, a heat dissipation motor, fan blades, a first air pipe, and a second air pipe. An inverted heat absorption plate is fixedly connected to the rear wall of the housing, with its opening facing rearward. Heat conducting rods are evenly connected to the inner wall of the inverted heat absorption plate. The rear ends of the heat conducting rods extend to the rear side of the housing and are fixedly connected to inverted V-shaped heat sinks. A heat dissipation shell is fixedly installed on the rear side of the housing, with its upper end connected to… It has an air inlet duct, and the air inlet of the air inlet duct is evenly arranged with cross mounting brackets from left to right. A cooling motor is installed in the middle of the cross mounting bracket through a motor base. A fan blade is fixedly connected to the output shaft of the cooling motor. The upper left and right side walls of the air inlet duct are connected to the No. 1 air pipe. The lower end of the No. 1 air pipe is connected to the upper end of the elastic rubber frame. The left and right side walls of the heat dissipation shell are symmetrically installed with the No. 2 air pipe near the lower end. The end of the No. 2 air pipe away from the heat dissipation shell is connected to the lower end of the elastic rubber frame.

[0019] Preferably, the heat dissipation housing has heat dissipation holes evenly distributed on both the left and right side walls and the bottom. The airflow blowing over the surface of the V-shaped heat sink will be discharged from the heat dissipation housing through the heat dissipation holes, thereby achieving the purpose of rapid cooling and heat dissipation.

[0020] The beneficial effects of this invention are:

[0021] (1) The explosion-proof charger for underground coal mines described in this invention can automatically disconnect the power supply during maintenance if a fault occurs when the charger is charging itself. This is achieved by opening the door of the charger by maintenance personnel, which will cause the control components to operate and disconnect the contacts of the charger from the charging terminal of the battery. This ensures the safety of maintenance personnel and improves the efficiency of maintenance.

[0022] (2) The explosion-proof charger for underground coal mines described in this invention has a temperature control component that can monitor the temperature inside the box during the charging process of the explosion-proof charger for underground coal mines. If the temperature is too high, the temperature control component will disconnect the contacts of the explosion-proof charger for underground coal mines from the charging end of the battery, reducing the risk of explosion caused by excessive temperature. At the same time, with the cooperation of the heat dissipation module, the box is cooled in time, avoiding the phenomenon of potential overheating during the charging process that could damage the charging area equipment and the charger itself.

[0023] (3) The explosion-proof charger for underground coal mines described in this invention has deep grooves uniformly arranged on the inner wall of the box, and ventilation holes are opened on the side walls of the deep grooves. During the use of the explosion-proof charger for underground coal mines, external humid gas will enter the box and adhere to the inner wall of the box. Some of the moisture may even liquefy into water droplets and flow into the deep grooves. When the explosion-proof charger for underground coal mines generates heat during its own charging, some of the heat will be carried away by the ventilation holes and then absorbed by the silica aerogel blocks. During the operation of the heat dissipation module, some of the hot air in the heat dissipation shell will enter the elastic rubber frame through the No. 2 air pipe and dry the silica aerogel blocks. Subsequently, this part of the gas will turn into moisture and enter the heat dissipation shell again through the No. 1 air pipe, thereby improving the heat dissipation efficiency of the heat dissipation module, reducing the corrosive effect of moisture on the inside of the box, extending the service life of the explosion-proof charger for underground coal mines, ensuring its explosion-proof effect, and thus protecting the personal safety of relevant technical personnel. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0026] Figure 2 This is a schematic diagram of the first three-dimensional structure of the box body without the upper side wall and the box door in this invention;

[0027] Figure 3This is a schematic diagram of the second three-dimensional structure of the box body without the upper side wall and the box door in this invention;

[0028] Figure 4 It is in this invention Figure 2 A magnified structural diagram at point A;

[0029] Figure 5 This is a top view of the present invention;

[0030] Figure 6 In this invention Figure 5 BB-direction sectional view;

[0031] Figure 7 This is a structural schematic diagram of the housing and control components in this invention;

[0032] Figure 8 This is a left-side structural schematic diagram of the housing and heat dissipation module in this invention;

[0033] Figure 9 In this invention Figure 8 A magnified structural diagram at point C;

[0034] Figure 10 This is a three-dimensional structural diagram of the heat dissipation module of the present invention with the rear side wall of the heat dissipation shell removed;

[0035] Figure 11 This is a schematic diagram of the internal structure of the elastic rod of the present invention.

[0036] In the diagram: 1. Base plate; 2. Support legs; 3. Housing; 31. Buffer assembly; 311. Elastic rubber frame; 312. Silica aerogel block; 32. Door; 33. Observation port; 34. Charging port; 35. Handle; 36. Cable fixing assembly; 361. Mounting slot; 362. Compression spring; 363. T-shaped rod; 364. Arc-shaped cable fixing plate; 37. Deep groove; 38. Ventilation hole; 4. Power supply module; 41. Control components; 411. External cable; 412. Contact; 413. Vertical rod; 414. Magnetic block No. 1; 415. Rectangular slide; 416. Compression spring; 417. Insulating rope; 418. Guide. 419. Pulley; 4110. Elastic rod; 4111. Limiting ring; 4111. Limiting wheel; 42. Battery storage block; 43. Parameter display screen; 44. Temperature control component; 441. Temperature detection head; 442. Wire; 443. Controller; 444. Electric slider; 445. No. 2 magnetic block; 45. Charging connector; 46. Signal indicator light; 57. Heat dissipation module; 51. C-shaped heat absorption plate; 52. Heat conduction rod; 53. V-shaped heat sink; 54. Heat dissipation shell; 541. Heat dissipation hole; 55. Air inlet duct; 56. Cross mounting bracket; 57. Heat dissipation motor; 58. Fan blade; 59. No. 1 air pipe; 510. No. 2 air pipe. Detailed Implementation

[0037] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0038] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0039] Example 1:

[0040] See Figures 1 to 11 An explosion-proof charger for use in coal mines includes a base plate 1, support legs 2, a housing 3, a power supply module 4, and a heat dissipation module 5. The support legs 2 are arranged in a matrix on the upper surface of the base plate 1. The housing 3 is fixedly connected to the upper end of the support legs 2. The power supply module 4 is installed inside the housing 3. The heat dissipation module 5 is installed on the rear side wall of the housing 3.

[0041] See Figure 1 The enclosure 3 includes a buffer assembly 31, a door 32, an observation port 33, a charging port 34, a handle 35, and a cable fixing assembly 36. The buffer assemblies 31 are symmetrically arranged on the left and right side walls of the enclosure 3. The door 32 is hinged to the left end of the front side wall of the enclosure 3. The handle 35 is fixedly connected to the middle of the front side wall of the door 32 near the right end. The observation port 33 is opened near the upper end of the door 32. The charging port 34 is opened below the observation port 33. The cable fixing assembly 36 is arranged inside the two side walls above the charging port 34. In actual operation, when the left and right sides of the housing 3 are impacted by external forces, the buffer component 31 can play a certain buffering role, thereby improving the stability of the explosion-proof charger for underground coal mines. The observation port 33 allows for manual observation of the operation of the explosion-proof charger for underground coal mines from the front to ensure it is operating normally. When an abnormality occurs inside the explosion-proof charger for underground coal mines, the door 32 can be manually pulled by the handle 35, which facilitates the maintenance of the explosion-proof charger for underground coal mines. The cable fixing component 36 can fix the charging cable of the external charging equipment during the charging process, thereby preventing it from falling off and affecting subsequent use.

[0042] See Figure 5 and Figure 6 The buffer assembly 31 includes an elastic rubber frame 311 and silicone aerogel blocks 312. The elastic rubber frame 311 is fixedly connected to the left and right side walls of the housing 3, and silicone aerogel blocks 312 are evenly arranged from top to bottom on the inner side wall of the elastic rubber frame 311. In actual operation, when the left and right sides of the housing 3 are subjected to external impact, the elastic rubber frame 311 and silicone aerogel blocks 312 can deform and play a certain buffering role, thereby improving the stability of the explosion-proof charger used in underground coal mines.

[0043] Example 2:

[0044] The technical solution is basically the same as that in Embodiment 1, except that, see below. Figure 8 and Figure 9 The cable fixing assembly 36 includes a mounting groove 361, a compression spring 362, a T-shaped rod 363, and an arc-shaped cable fixing plate 364. The mounting groove 361 is evenly provided inside the upper and lower side walls of the charging port 34 from left to right. The T-shaped rod 363 is slidably installed inside the mounting groove 361 through the compression spring 362. The end of the T-shaped rod 363 away from the compression spring 362 extends to the outside of the mounting groove 361 and is fixedly connected to the arc-shaped cable fixing plate 364. In practice, when charging an external charging device, the arc-shaped cable retainer 364 is first manually separated. At this time, the compression spring 362 is compressed, and the T-shaped rod 363 slides into the mounting groove 361. Then, the charging cable of the external charging device is inserted into the charging connector 45 through the charging port 34. If the signal indicator light 46 lights up, it indicates that charging is proceeding normally. The arc-shaped cable retainer 364 is then released, and the reaction force of the compression spring 362 drives the T-shaped rod 363 and the arc-shaped cable retainer 364 to move closer to the charging cable, ultimately clamping the charging cable and preventing it from falling off the charging connector 45.

[0045] See Figure 6 The inner walls of the box 3 on both sides are provided with deep grooves 37, and ventilation holes 38 are opened on the side walls of the deep grooves 37. The end of the silicone aerogel block 312 away from the elastic rubber frame 311 covers the outside of the deep grooves 37. In actual operation, during the operation of the explosion-proof charger in the coal mine, the moisture in the mine will enter the box. This moisture will liquefy into small water droplets when it comes into contact with the relatively cool inner wall of the box 3 and enter the deep grooves 37. The heat generated by the explosion-proof charger in the coal mine during its charging process will be partially discharged through the ventilation holes 38 and a small amount of moisture will be carried away. This moisture will eventually be absorbed by the silicone aerogel block 312, thereby achieving the effect of removing moisture.

[0046] Example 3:

[0047] The technical solution is basically the same as that in Embodiment 1, except that, see below. Figure 2 and Figure 3The power supply module 4 includes a control component 41, a battery storage block 42, a parameter display screen 43, a temperature control component 44, a charging connector 45, and a signal indicator light 46. The battery storage block 42 is placed inside the housing 3. The parameter display screen 43 is located on the front side wall of the battery storage block 42 near the top. Charging connectors 45 are evenly installed from left to right below the parameter display screen 43. Each charging connector 45 is connected to a signal indicator light 46. The control component 41 is located on the upper surface of the battery storage block 42. The front end of the control component 41 is fixedly connected to the housing door 32. The temperature control component 44 is installed on the upper surface of the battery storage block 42 near the right side. The right end of the temperature control component 44 is fixedly installed on the side wall of the housing 3.

[0048] In specific operations, during the operation of the explosion-proof charger in the coal mine, workers can observe the display readings on the parameter display screen 43 through the observation port 33 to determine whether the explosion-proof charger is operating normally. The function of the control component 41 is to disconnect the external power supply and the battery storage block 42 when the box door 32 is manually opened, thereby improving the work safety of maintenance personnel. The function of the temperature control component 44 is to detect whether the internal temperature of the explosion-proof charger is too high during the charging process of the battery storage block 42. When the internal temperature of the explosion-proof charger reaches the set value, the temperature control component 44 can disconnect the power to the battery storage block 42. When the explosion-proof charger charges external charging equipment, the charging cable and charging connector 45 of the external charging equipment are connected. At this time, the signal indicator light 46 lights up, indicating that the charging process is proceeding normally.

[0049] See Figure 2The control component 41 includes an external cable 411, a contact 412, a vertical rod 413, a first magnetic block 414, a rectangular slide 415, a compression spring 416, an insulating rope 417, a guide pulley 418, an elastic rod 419, a limiting ring 4110, and a limiting wheel 4111. A rectangular slide 415 is formed in the middle of the upper surface of the battery storage block 42. A first magnetic block 414 is slidably disposed near the middle of the rectangular slide 415. A compression spring 416 is installed between the left side wall of the first magnetic block 414 and the left end side wall of the rectangular slide 415. The upper end of the first magnetic block 414 is fixed... A vertical rod 413 is fixedly connected, and a contact 412 is fixedly connected to the upper end of the vertical rod 413. An external cable 411 is fixedly connected to the left side wall of the contact 412. A guide pulley 418 is installed on the side wall of the box 3 on the left side of the rectangular slide 415. An insulating rope 417 is bolted to the vertical rod 413. The insulating rope 417 passes around the guide pulley 418 and the limiting wheel 4111 and is fixedly connected to the elastic rod 419. The front end of the elastic rod 419 abuts against the box door 32. A limiting ring 4110 is slidably sleeved on the elastic rod 419. The left end of the limiting ring 4110 is fixedly connected to the left side wall inside the box 3. In actual operation, during the process of manually opening the box door 32, because the elastic rod 419 abuts against the box door 32, the elastic rod 419 is a telescopic rod. The telescopic part of the elastic rod is located away from the connection between the insulating rope 417 and the elastic rod 419. Figure 11 As shown, opening the box door 32 will cause the elastic rod 419 to extend and move forward. The elastic rod 419 pulls the insulating rope 417, thereby causing the vertical rod 413 and the first magnetic block 414 to slide to the left in the rectangular slide groove 415. At this time, the compression spring 416 is continuously compressed, and the vertical rod 413 will drive the contact 412 to move to the left, so that the contact 412 is disengaged from the power input end of the battery 42, thereby achieving the purpose of de-energizing the battery 42. When the box door 32 is manually closed, the elastic rod 419 returns to its original position, and the reaction force of the compression spring 416 will drive the first magnetic block 414, the vertical rod 413 and the contact 412 to return to their original position, so that the contact 412 is once again tightly attached to the power input end of the battery 42, and the battery 42 continues to charge.

[0050] See Figures 2 to 4The temperature control component 44 includes a temperature detection head 441, a wire 442, a controller 443, an electric slider 444, and a second magnetic block 445. The electric slider 444 is slidably disposed near the right end of the rectangular slide groove 415. The second magnetic block 445 is fixedly connected to the left end of the electric slider 444. The right end of the first magnetic block 414 and the left end of the second magnetic block 445 have the same polarity. When the internal temperature of the explosion-proof charger used in the coal mine is too high, the second magnetic block 445 will move closer to the first magnetic block 414. The repulsive effect of the second magnetic block 445 on the first magnetic block 414 will drive the first magnetic block 414 to move to the left, thereby stopping the battery 42 from receiving power. The controller 443 is fixedly installed on the upper end of the electric slider 444. The temperature detection head 441 is installed on the inner side wall of the housing 3 on the right side of the controller 443. The temperature detection head 441 and the controller 443 are connected by the wire 442. In actual operation, during the charging process of the battery storage block 42 by the explosion-proof charger in the coal mine, the temperature detection head 441 can monitor the internal temperature of the explosion-proof charger in the coal mine. When the temperature is too high, the temperature detection head 441 will transmit the signal to the controller 443, and the controller 443 will drive the electric slider 444 and the second magnetic block 445 to slide to the left. Under the principle of like poles repulsion, the second magnetic block 445 will drive the first magnetic block 414 to move to the left. At this time, the contact 412 will disengage from the power input terminal of the battery storage block 42, and the battery storage block 42 will stop receiving power.

[0051] See Figure 1 , Figure 5 , Figure 6 , Figure 8 and Figure 10The heat dissipation module 5 includes an inverted heat absorption plate 51, heat-conducting rods 52, V-shaped heat sinks 53, a heat dissipation shell 54, an air inlet duct 55, a cross mounting bracket 56, a heat dissipation motor 57, fan blades 58, a first air pipe 59, and a second air pipe 510. An inverted heat absorption plate 51 is fixedly connected to the rear wall of the housing 3, with its opening facing rearward. Heat-conducting rods 52 are evenly connected to the inner wall of the inverted heat absorption plate 51. The rear ends of the heat-conducting rods 52 extend to the rear side of the housing 3 and are fixedly connected to inverted V-shaped heat sinks 53. A heat dissipation shell 54 is fixedly installed on the rear side of the housing 3. The upper end of the heat dissipation shell 54... The air inlet duct 55 is connected to the air inlet. The air inlet of the air inlet duct 55 is evenly provided with cross mounting brackets 56 from left to right. A cooling motor 57 is installed in the middle of the cross mounting bracket 56 through a motor base. A fan blade 58 is fixedly connected to the output shaft of the cooling motor 57. A first air pipe 59 is connected to the left and right side walls of the upper end of the air inlet duct 55. The lower end of the first air pipe 59 is connected to the upper end of the elastic rubber frame 311. A second air pipe 510 is symmetrically installed on the left and right side walls of the heat dissipation shell 54 near the lower end. The end of the second air pipe 510 away from the heat dissipation shell 54 is connected to the lower end of the elastic rubber frame 311. In actual operation, when the internal temperature of the explosion-proof charger used in the underground coal mine is too high, the C-shaped heat absorption plate 51 will absorb the heat inside the housing 3 and transfer the heat to the V-shaped heat sink 53 through the heat conduction rod 52. The heat dissipation motor 57 will be started, and the fan blade 58 will be rotated by the heat dissipation motor 57, thereby continuously blowing air into the heat dissipation shell 54, thereby cooling the surface of the V-shaped heat sink 53. Some of the hot air inside the heat dissipation shell 54 will enter the elastic rubber frame 311 through the second air pipe 510 and dry the silicone aerogel block 312. The gas passing through the silicone aerogel block 312 will become humid gas and enter the heat dissipation shell 54 again through the first air pipe 59, thereby improving the heat dissipation effect of the V-shaped heat sink 53.

[0052] The working principle of this invention during use is as follows:

[0053] First, connect the external cable 411 to the external power supply. At this time, the explosion-proof charger used in the coal mine will start charging the battery storage block 42. The normal operation of the explosion-proof charger used in the coal mine can be judged by manually observing the display reading on the parameter display screen 43.

[0054] Second: If the explosion-proof charger used in the coal mine is working normally, the temperature detection head 441 will start working and monitor the temperature inside the housing 3. If the temperature inside the housing 3 is too high, the temperature detection head 441 will transmit a signal to the controller 443, which will drive the electric slider 444 and the second magnetic block 445 to slide to the left. Under the principle of like poles repelling each other, the second magnetic block 445 will drive the first magnetic block 414 to move to the left. At this time, the contact 412 will disengage from the power input terminal of the battery accumulator 42, and the battery accumulator 42 will stop receiving power. At the same time, the C-shaped heat absorption plate 51 will absorb the heat inside the housing 3 and transfer the heat to the V-shaped heat sink 53 through the heat conduction rod 52, starting the heat dissipation process. The heat motor 57 drives the fan blades 58 to rotate, thereby continuously blowing air into the heat dissipation housing 54 to cool the surface of the V-shaped heat sink 53, thus achieving the purpose of cooling the inside of the housing 3. This reduces the risk of the battery 42 exploding due to overheating during charging. Some of the hot air inside the heat dissipation housing 54 enters the elastic rubber frame 311 through the second air pipe 510 and dries the silicone aerogel block 312. The gas passing through the silicone aerogel block 312 becomes humid gas and re-enters the heat dissipation housing 54 through the first air pipe 59, thereby improving the heat dissipation effect of the V-shaped heat sink 53.

[0055] 3. If the explosion-proof charger used in the underground coal mine fails to work properly, the door 32 can be opened manually by holding handle 35. During the manual opening of the door 32, the elastic rod 419 will contact the door 32. The elastic rod 419 is a telescopic rod, and its telescopic part is located away from the connection between the insulating rope 417 and the elastic rod 419. By pulling the insulating rope 417 through the elastic rod 419, the vertical rod 413 and the first magnetic block 414 will slide to the left in the rectangular slide groove 415. At this time, the compression spring 416 will be continuously compressed, and the vertical rod 413 will drive the contact 412 to move to the left, causing the contact 412 to disengage from the power input end of the battery 42, thereby achieving the purpose of de-energizing the battery 42. After the maintenance is completed, the person... When the box door 32 is closed, the elastic rod 419 resets, and the reaction force of the compression spring 416 will drive the first magnetic block 414, the vertical rod 413 and the contact 412 to reset, so that the contact 412 is once again tightly attached to the power input end of the battery block 42, and the battery block 42 continues to charge. During the process of manually opening the box door 32, external humid gas will enter the box body 3. This humid gas will adhere to the inner wall of the box body 3, and some of the humid gas will liquefy into small water droplets and enter the deep groove 37. The heat generated by the explosion-proof charger in the coal mine during its charging process will be partially discharged through the ventilation hole 38 and take away a small amount of moisture. This moisture will eventually be absorbed by the silica aerogel block 312, thereby achieving the effect of removing moisture.

[0056] 4. After the battery storage block 42 is fully charged, disconnect the external power supply. When it is necessary to charge an external charging device, first manually separate the arc-shaped cable fixing plate 364. At this time, the compression spring 362 is compressed, and the T-shaped rod 363 slides into the mounting groove 361. Then, insert the charging cable of the external charging device into the charging connector 45 through the charging port 34. The signal indicator light 46 will light up, indicating that charging is proceeding normally. Release the arc-shaped cable fixing plate 364. The reaction force of the compression spring 362 will drive the T-shaped rod 363 and the arc-shaped cable fixing plate 364 to move closer to the charging cable, and finally clamp the charging cable, thereby preventing the charging cable from falling off the charging connector 45. After charging is completed, manually repeat the above operation to unplug the charging cable of the external charging device, thereby completing the charging process of the external charging device.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof charger for underground coal mines, comprising a base plate (1), support legs (2), a housing (3), a power supply module (4), and a heat dissipation module (5), characterized in that: The base plate (1) has legs (2) arranged in a matrix on its upper surface. The upper end of the legs (2) is fixedly connected to a box (3). The box (3) is equipped with a power supply module (4) and a heat dissipation module (5) is installed on the rear side wall of the box (3). The enclosure (3) includes a buffer assembly (31), a door (32), an observation port (33), a charging port (34), a handle (35), and a cable fixing assembly (36). The buffer assembly (31) is symmetrically arranged on the left and right side walls of the enclosure (3). The door (32) is hinged to the left end of the front side wall of the enclosure (3). The handle (35) is fixedly connected to the middle of the front side wall of the door (32) near the right end. The observation port (33) is opened near the upper end of the door (32). The charging port (34) is opened below the observation port (33). The cable fixing assembly (36) is arranged inside the upper side walls of the charging port (34). The power supply module (4) includes a control component (41), a battery storage block (42), a parameter display screen (43), a temperature control component (44), a charging connector (45), and a signal indicator light (46). The battery storage block (42) is placed inside the housing (3). The parameter display screen (43) is located near the top of the front side wall of the battery storage block (42). The charging connectors (45) are evenly installed from left to right below the parameter display screen (43). Each charging connector (45) is connected to a signal indicator light (46). The control component (41) is located on the upper surface of the battery storage block (42). The front end of the control component (41) is fixedly connected to the door (32). The temperature control component (44) is installed near the right side of the upper surface of the battery storage block (42). The right end of the temperature control component (44) is fixedly installed on the side wall of the housing (3). The control component (41) includes an external cable (411), a contact (412), a vertical rod (413), a first magnetic block (414), a rectangular slide (415), a compression spring (416), an insulating rope (417), a guide pulley (418), an elastic rod (419), a limiting ring (4110), and a limiting wheel (4111). A rectangular slide (415) is provided in the middle of the upper surface of the battery block (42). A first magnetic block (414) is slidably disposed near the middle of the rectangular slide (415). A compression spring (416) is installed between the left side wall of the first magnetic block (414) and the left side wall of the rectangular slide (415). The upper end of the first magnetic block (414) is fixed... A vertical rod (413) is fixedly connected to the top of the vertical rod (413), and an external cable (411) is fixedly connected to the left side wall of the contact (412). A guide pulley (418) is installed on the side wall of the box (3) on the left side of the rectangular slide (415). An insulating rope (417) is bolted to the vertical rod (413). The insulating rope (417) passes around the guide pulley (418) and the limiting wheel (4111) and is fixedly connected to the elastic rod (419). The front end of the elastic rod (419) abuts against the box door (32). A limiting ring (4110) is slidably sleeved on the elastic rod (419). The left end of the limiting ring (4110) is fixedly connected to the left side wall inside the box (3).

2. The explosion-proof charger for underground coal mines according to claim 1, characterized in that: The buffer assembly (31) includes an elastic rubber frame (311) and a silicone aerogel block (312). The elastic rubber frame (311) is fixedly connected to the left and right side walls of the box (3), and the silicone aerogel block (312) is evenly arranged from top to bottom on the inner side wall of the elastic rubber frame (311).

3. The explosion-proof charger for underground coal mines according to claim 2, characterized in that: The elastic rubber frame (311) is a side-opening frame structure with the opening side of the elastic rubber frame (311) facing the side wall of the box (3) and fixedly connected to the box (3).

4. The explosion-proof charger for underground coal mines according to claim 2, characterized in that: The box (3) has deep grooves (37) on its left and right inner sidewalls. Ventilation holes (38) are opened on the sidewalls of the deep grooves (37). The end of the silicone aerogel block (312) away from the elastic rubber frame (311) is covered on the outside of the deep grooves (37).

5. The explosion-proof charger for underground coal mines according to claim 4, characterized in that: The cable fixing assembly (36) includes a mounting groove (361), a compression spring (362), a T-shaped rod (363), and an arc-shaped cable fixing plate (364). The mounting groove (361) is evenly provided from left to right inside the upper and lower side walls of the charging port (34). The T-shaped rod (363) is slidably installed inside the mounting groove (361) through the compression spring (362). The end of the T-shaped rod (363) away from the compression spring (362) extends to the outside of the mounting groove (361) and is fixedly connected to the arc-shaped cable fixing plate (364).

6. The explosion-proof charger for underground coal mines according to claim 1, characterized in that: The temperature control component (44) includes a temperature detection head (441), a wire (442), a controller (443), an electric slider (444), and a second magnetic block (445). The electric slider (444) is slidably arranged in the rectangular slide groove (415) near the right end. The second magnetic block (445) is fixedly connected to the left end of the electric slider (444). The controller (443) is fixedly installed on the upper end of the electric slider (444). The temperature detection head (441) is installed on the inner wall of the box (3) on the right side of the controller (443). The temperature detection head (441) and the controller (443) are connected by a wire (442).

7. The explosion-proof charger for underground coal mines according to claim 6, characterized in that: The right end of the first magnetic block (414) and the left end of the second magnetic block (445) have the same polarity.

8. The explosion-proof charger for underground coal mines according to claim 1, characterized in that: The heat dissipation module (5) includes an inverted heat absorption plate (51), a heat conduction rod (52), a V-shaped heat sink (53), a heat dissipation shell (54), an air inlet pipe (55), a cross mounting bracket (56), a heat dissipation motor (57), a fan blade (58), a first air pipe (59), and a second air pipe (510). The inverted heat absorption plate (51) is fixedly connected to the rear side wall of the housing (3). The opening of the inverted heat absorption plate (51) faces backward. Heat conduction rods (52) are evenly connected to the inner side wall of the inverted heat absorption plate (51). The rear end of the heat conduction rod (52) extends to the rear side of the housing (3) and is fixedly connected to an inverted V-shaped heat sink (53). A heat dissipation shell (54) is fixedly installed on the rear side of the housing (3). (54) The upper end is connected to an air inlet pipe (55). The air inlet of the air inlet pipe (55) is evenly provided with cross mounting brackets (56) from left to right. A cooling motor (57) is installed in the middle of the cross mounting bracket (56) through a motor base. A fan blade (58) is fixedly connected to the output shaft of the cooling motor (57). A first air pipe (59) is connected to the left and right side walls of the upper end of the air inlet pipe (55). The lower end of the first air pipe (59) is connected to the upper end of the elastic rubber frame (311). A second air pipe (510) is symmetrically installed on the left and right side walls of the heat dissipation shell (54) near the lower end. The end of the second air pipe (510) away from the heat dissipation shell (54) is connected to the lower end of the elastic rubber frame (311).

9. The explosion-proof charger for underground coal mines according to claim 8, characterized in that: The heat dissipation housing (54) has heat dissipation holes (541) evenly provided on the left and right side walls and bottom.

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