A reliability detection device for explosion-proof electrical switches used in mines

Abstract

The invention discloses a reliability detection device for explosion-proof electrical switches for mining, comprising a base, protective side plates fixed on both sides of the base, a top plate on the top of the protective side plates, an impact assembly in the middle of the top plate, side seats on both sides of the base, a detection frame in the middle of the base, a first pressure sensor in the middle of the detection frame, a hydraulic rod installed on the side seat, the hydraulic rod penetrates the detection frame and is connected to a fixed clamping plate, a second pressure sensor is provided on the fixed clamping plate, an electrical control box is provided on the outer wall of the protective side plate, and two fixed clamping plates in the detection frame fix and clamp the explosion-proof electrical switch body to be tested. The invention uses an impact plate to strongly impact the explosion-proof joint surface on the explosion-proof electrical switch, judges the compression resistance of the explosion-proof joint surface, and ensures its reliability of compression resistance and impact resistance; the central control circuit replaces the traditional manual handheld measuring tool for measurement, reduces the uncertainty error introduced by manual measurement, can prevent the explosion-proof joint surface from being damaged by mistake during measurement, and improves the detection efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of detection of explosion-proof electrical switches for mines, and relates to a reliability detection device for explosion-proof electrical switches for mines. Background Art

[0002] Mine explosion-proof electrical switches are electrical switches that can be safely used in explosive environments such as coal mines. Their main functions are to turn on, turn off, and switch circuits. This type of switch uses a special design and material to prevent fires and explosions caused by equipment failure or operational errors.

[0003] Mine explosion-proof electrical switches are widely used in explosive environments such as coal mines to control various mine electrical equipment, such as the front and rear lights of electric locomotives and the switching on and off of signal light circuits, as well as control the lighting and signal systems of battery locomotives and loaders. The application of these switches effectively improves the safety level of mine electricity use and reduces the probability of accidents.

[0004] The characteristics of mining explosion-proof electrical switches are as follows:

[0005] 1. Explosion-proof performance: The explosion-proof electrical switch for mining adopts a flameproof structure. The contact surface between the shell and the inside of the switch is made of special flameproof material to prevent sparks from entering the surrounding flammable gas through the shell and causing an explosion. In addition, the contact and lead materials of the explosion-proof switch are made of metal materials with good conductivity to ensure that no excessive electric sparks are generated when the current flows.

[0006] 2. Safety: The internal structure of the explosion-proof electrical switch for mining is also equipped with an airtight structure. When explosive gas enters the switch, it is quickly discharged through a special exhaust device to prevent the accumulated combustible gas from detonating. At the same time, the explosion-proof switch is also equipped with a temperature control device. When the internal temperature of the switch is too high, the power supply will be automatically disconnected to avoid overheating and explosion of combustible materials.

[0007] 3. Adaptability: Mining explosion-proof electrical switches can adapt to the harsh environments of high humidity, high temperature, dust, wind, and explosion in coal mines, ensuring that they can work stably and reliably in these environments.

[0008] When testing explosion-proof electrical switches for mining, it is necessary to pay attention to multiple aspects of performance and safety to ensure that they can operate safely and reliably in flammable and explosive environments. For example, it is necessary to test the pressure resistance and impact resistance of the explosion-proof joint surface to verify whether its explosion-proof performance is good. However, most of the existing testing methods on the market use measuring tools such as vernier calipers, micrometers, and feeler gauges to measure directly on the explosion-proof joint surface to check whether its width meets the design requirements. This detection method is not efficient and cannot detect the pressure resistance of the explosion-proof joint surface in real time. Summary of the invention

[0009] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a reliability detection device for explosion-proof electrical switches for mines, so as to solve the problems in the prior art of low efficiency of pressure resistance detection method for explosion-proof electrical switches for mines and inability to detect the pressure resistance effect of the explosion-proof joint surface in real time.

[0010] In order to solve the above technical problems, the present invention adopts the following technical solutions to achieve the above problems:

[0011] A reliability detection device for explosion-proof electrical switches for mining comprises a base, with protective side plates fixed on the left and right sides of the base, a top plate fixed on the top of the two protective side plates, an impact assembly arranged in the middle of the top plate, side seat bodies fixedly installed inside the left and right sides of the base, a detection frame fixedly installed in the middle of the base, a first pressure sensor arranged in the middle of the detection frame, hydraulic rods fixedly installed on one side of the two side seat bodies close to the detection frame, one end of the hydraulic rod away from the side seat bodies penetrates the detection frame and is connected with a fixed clamping plate, a second pressure sensor is arranged on the fixed clamping plate, and an electrical control box is fixed on the outer wall of the protective side plate; the explosion-proof electrical switch body to be detected is fixedly clamped by two fixed clamping plates on the left and right sides in the detection frame directly below the impact assembly.

[0012] The present invention also includes the following technical features:

[0013] Specifically, the impact assembly includes a cylinder mounting frame fixedly mounted on the top of the top plate, an impact cylinder is fixedly connected to the cylinder mounting frame via bolts, a piston column penetrating the top plate is connected to the bottom of the impact cylinder, and an impact plate is fixedly connected to the bottom of the piston column.

[0014] Specifically, guide blocks are integrally arranged on both the left and right sides of the impact plate, and guide grooves cooperating with the guide blocks are opened on the inner walls of the left and right protective side plates, and the guide blocks are located in the guide grooves and slide up and down.

[0015] Specifically, a hydraulic cylinder is fixedly installed inside the side seat body, the output end of the hydraulic cylinder is keyed to one end of a hydraulic rod, and the other end of the hydraulic rod penetrates the detection frame and is fixedly connected to the back of the fixed clamping plate.

[0016] Specifically, grooves are provided on the left and right sides of the base, and the side seat body is inserted into the grooves for fixation.

[0017] Specifically, a resistance block is embedded in the middle of the detection frame, the bottom of the resistance block is connected to the first pressure sensor, the top of the resistance block protrudes from the lower surface of the detection frame, and the bottom of the resistance block is in contact with the upper detection surface of the first pressure sensor.

[0018] Specifically, a plurality of second pressure sensors are embedded on the opposite surfaces of the two fixing clamps.

[0019] Specifically, an electrical control box is fixed to the outer wall of the protective side panel on the right side, and a central control module, a data judgment module, a data storage module and a wireless communication module are arranged in the electrical control box.

[0020] Specifically, the signal input end of the central control module is connected to the first pressure sensor and the data judgment module, the information input end of the data judgment module is connected to the second pressure sensor, and the signal output end of the central control module is connected to the impact cylinder, the hydraulic cylinder, the data storage module and the wireless communication module.

[0021] Specifically, the central control circuit in the electrical control box is provided with a wireless communication module of an integrated circuit U6 of model RF-WM-8720-AP, a data judgment module, a data storage module of an integrated circuit U10 of model HS-SSD-E3000, and an integrated circuit U3 of model STM32F6.

[0022] Compared with the prior art, the present invention has the following technical effects:

[0023] The present invention places the produced explosion-proof electrical switch body to be tested inside the testing frame, and places its flameproof joint surface on the top, then controls the impact cylinder to work, the impact cylinder drives the piston column below to reciprocate, and then causes the impact plate to reciprocate, and finally the flameproof joint surface on the explosion-proof electrical switch is strongly impacted by the impact plate, and then the compression resistance of the flameproof joint surface is determined to ensure its reliability in compression resistance and impact resistance, which is very practical.

[0024] The central control circuit of the present invention replaces the traditional manual handheld measuring tool measurement method, reduces the uncertainty error introduced by manual measurement, and can prevent accidental damage when measuring the explosion-proof joint surface, improves the detection efficiency, and thus promotes the development and application of explosion-proof inspection technology for explosion-proof electrical switches in underground coal mines. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an overall stereoscopic diagram of the reliability detection device for the explosion-proof electrical switch for mining of the present invention.

[0026] Figure 2 The present invention is a three-dimensional diagram of the impact structure of the reliability detection device of the explosion-proof electrical switch for mining.

[0027] Figure 3 It is a three-dimensional diagram of the mounting frame of the detection frame of the present invention.

[0028] Figure 4 For the present invention Figure 3 Top view of the .

[0029] Figure 5 It is a schematic diagram of the connection of the electrical module of the present invention.

[0030] Figure 6 Schematic diagram of the central control circuit of the present invention.

[0031] The meaning of each number in the figure is:

[0032] 1. Base, 2. Protective side plates, 3. Top plate, 4. Impact assembly, 41. Cylinder mounting bracket, 42. Impact cylinder, 43. Piston column, 44. Impact plate, 45. Guide block, 46. Guide groove, 5. Side seat body, 6. Hydraulic rod, 7. Detection frame, 71. Resistance block, 72. First pressure sensor, 8. Fixed splint, 9. Explosion-proof electrical switch body, 10. Hydraulic cylinder, 11. Second pressure sensor. DETAILED DESCRIPTION

[0033] Specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of this application fall within the protection scope of the present invention.

[0034] Example:

[0035] like Figures 1 to 6 As shown, the present embodiment provides a reliability detection device for an explosion-proof electrical switch for mining, comprising a base 1, with protective side plates 2 fixed on the left and right sides of the base 1, a top plate 3 fixed on the top of the two protective side plates 2, an impact assembly 4 provided in the middle of the top plate 3, side seat bodies 5 fixedly installed inside the left and right sides of the base 1, a detection frame 7 fixedly installed in the middle of the base 1, a first pressure sensor 72 provided in the middle of the detection frame 7, a hydraulic rod 6 fixedly installed on one side of the two side seat bodies 5 close to the detection frame 7, an end of the hydraulic rod 6 away from the side seat body 5 penetrates the detection frame 7 and is connected to a fixed clamping plate 8, a second pressure sensor 11 is provided on the fixed clamping plate 8, and an electrical control box is fixed to the outer wall of the protective side plate 2; the explosion-proof electrical switch body 9 to be detected is fixedly clamped by two fixed clamping plates 8 on the left and right sides in the detection frame 7 just below the impact assembly 4.

[0036] The impact assembly 4 includes a cylinder mounting frame 41 fixedly mounted on the top of the top plate 3, an impact cylinder 42 is fixedly connected to the inside of the cylinder mounting frame 41 by bolts, a piston column 43 penetrating the top plate 3 is connected to the bottom of the impact cylinder 42, and an impact plate 44 is fixedly connected to the bottom of the piston column 43. By controlling the impact cylinder 42 to work, the piston column 43 connected to its output end below is driven to move up and down, and finally the impact plate 44 strongly impacts the flameproof joint surface on the explosion-proof electrical switch during the reciprocating motion, and then the compression resistance of the flameproof joint surface is determined to ensure its reliability in compression resistance and impact resistance.

[0037] Guide blocks 45 are integrally provided on both the left and right sides of the impact plate 44, and guide grooves 46 cooperating with the guide blocks 45 are provided on the inner walls of the left and right protective side plates 2, and the guide blocks 45 slide up and down in the guide grooves 46. The guide blocks 45 move up and down in the guide grooves 46, thereby preventing the impact plate 44 from being offset during the up and down impact process.

[0038] A hydraulic cylinder 10 is fixedly installed inside the side seat body 5, and the output end of the hydraulic cylinder 10 is keyed to one end of the hydraulic rod 6, and the other end of the hydraulic rod 6 penetrates the detection frame 7 and is fixedly connected to the back of the fixed clamping plate 8. The hydraulic cylinder 10 provides power to the hydraulic rod 6, so that the hydraulic rod 6 drives the fixed clamping plate 8 located inside the detection frame 7 to move left and right, so that the entire mining explosion-proof electrical switch is clamped by two fixed clamping plates 8 to prevent it from moving during the pressure resistance detection process.

[0039] Grooves are provided on the left and right sides of the base 1 , and the side seat body 5 is inserted into the grooves for fixing.

[0040] A resistance block 71 is embedded in the middle of the detection frame 7, the bottom of the resistance block 71 is connected to the first pressure sensor 72, the top of the resistance block 71 protrudes from the lower surface of the detection frame 7, and the bottom of the resistance block 71 fits the upper detection surface of the first pressure sensor 72. During each impact on the mining explosion-proof electrical switch, the impact pressure can be detected by the first pressure sensor 72, so as to know and record whether the pressure resistance value of the explosion-proof joint surface of the mining explosion-proof electrical switch is within the qualified range.

[0041] A plurality of second pressure sensors 11 are embedded on the opposite surfaces of the two fixing clamping plates 8 .

[0042] An electrical control box is fixed to the outer wall of the protective side panel 2 on the right side, and a central control module, a data judgment module, a data storage module and a wireless communication module are arranged in the electrical control box.

[0043] The signal input end of the central control module is connected to the first pressure sensor 72 and the data judgment module, the information input end of the data judgment module is connected to the second pressure sensor 11, and the signal output end of the central control module is connected to the impact cylinder 42, the hydraulic cylinder 10, the data storage module and the wireless communication module.

[0044] The wireless communication module is connected to the external intelligent receiving terminal for communication, so as to quickly obtain data. The central control module is powered by an external power supply, wherein the data judgment module is used to select the maximum and minimum values ​​of several second pressure sensors 11 and transmit them to the central control module, and then compare the maximum and minimum values ​​with the preset value range of the pressure on the outer wall of the explosion-proof electrical switch body 9. If the minimum value is less than the lowest value of the preset value range, it means that there is no clamping. If the maximum value is greater than the highest value of the preset value range, it means that the explosion-proof electrical switch body 9 will be clamped, so that the explosion-proof electrical switch body 9 can be reliably clamped without clamping the explosion-proof electrical switch body 9.

[0045] Preferably, the central control circuit in the electrical control box is provided with a wireless communication module of the integrated circuit U6 with model RF-WM-8720-AP, a data judgment module, a data storage module of the integrated circuit U10 with model HS-SSD-E3000, and an integrated circuit U3 with model STM32F6.

[0046] like Figure 6 As shown, the central control circuit specifically includes:

[0047] One end of resistor R22 is connected to the power supply V1, and the second end of resistor R22 is connected to one end of resistor R21 to form a series connection. One end of capacitor C27 is connected to the second end of resistor R21 and is also connected to one end of resistor R24. The second end of capacitor C27 is connected to one end of resistor R22. One end of resistor R20 is connected to GND, and the second end is respectively connected to the second end of R22 and the negative electrode of comparator U1. One end of capacitor C29 is connected to GND, and the second end is respectively connected to the power supply V2 and the fourth end of the comparator. One end of capacitor C28 is connected to GND, and the second end is respectively connected to the second end of resistor R24 ​​and the positive electrode of comparator U1. The fifth end of comparator U1 is connected to GND. The output end of comparator U1 is connected to one end of resistor R7, and the second end of resistor R7 is connected to the D+ pin of integrated circuit U3.

[0048] One end of resistor R32 is connected to the power supply V3, and the second end of resistor R32 is connected to one end of resistor R31 to form a series connection. One end of capacitor C37 is connected to the second end of resistor R31 and is also connected to one end of resistor R34. The second end of capacitor C37 is connected to one end of resistor R32. One end of resistor R30 is connected to GND, and the second end is respectively connected to the second end of R32 and the negative electrode of comparator U2. One end of capacitor C39 is connected to GND, and the second end is respectively connected to the power supply V4 and the fourth end of the comparator. One end of capacitor C38 is connected to GND, and the second end is respectively connected to the second end of resistor R34 and the positive electrode of comparator U2. The fifth end of comparator U2 is connected to GND. The output end of comparator U2 is connected to one end of resistor R8, and the second end of resistor R8 is connected to the D-pin of integrated circuit U3.

[0049] The XT_IN pin of the integrated circuit U3 is connected to one end of the crystal oscillator Y1, and the other end of the crystal oscillator Y1 is connected to the XT_OUT of the integrated circuit U3. The VBUS, VDD3D, VDD, VDD3A, and VDD3C pins of the integrated circuit U3 are connected in parallel to the power supply V5. The RESET, VSS, and AGND pins of the integrated circuit U3 are connected to GND. One end of the voltage V10 is connected to the VDD33 pin of the integrated circuit U3. One end of the capacitor C4 is connected to the power supply V10, and the second end is respectively connected to one end of the capacitor C6 and the capacitor C7 and GND. The The second end is connected to the voltage V9 and the LDO pin of the integrated circuit U3, the second end of the capacitor C7 is respectively connected to the voltage V8 and the VDD16 of the integrated circuit U3, the voltage V8 is also connected to the LDO16 pin of the integrated circuit U3, the COAP pin of the integrated circuit U3 is connected to one end of the capacitor C2, the other end of the capacitor C2 is connected to the COAN of the integrated circuit U3, the VGH pin of the integrated circuit U3 is connected to one end of the capacitor C9, the second end of the capacitor C9 is connected to one end of the capacitor C10 and GND, and the second end of the capacitor C10 is connected to the VTX pin of the integrated circuit U3.

[0050] One end of resistor R40 is connected to the SCL pin of integrated circuit U3, the second end of resistor R40 is connected to the TRX pin of integrated circuit U10, one end of resistor R41 is connected to the SDA pin of integrated circuit U3, the second end of resistor R41 is connected to the RX pin of integrated circuit U10, the power supply V9 ​​is connected to the VCC pin of integrated circuit U10 and one end of capacitor C59, and the second end of capacitor C59 is connected to the GND pin and GND end of integrated circuit U10.

[0051] The GND and AGND of the integrated circuit U6 are connected to the GND end, one end of the resistor R50 is connected to the RX pin of the integrated circuit U6, the second end of the resistor R50 is connected to the RX pin of the integrated circuit U3, one end of the resistor R51 is connected to the TX pin of the integrated circuit U6, the second end of the resistor R51 is connected to the RX pin of the integrated circuit U3, one end of the capacitor C54 is connected to GND, the second end is connected to the EN pin of the integrated circuit U6 and one end of the resistor R52, the second end of the resistor R52 is connected to the power supply V13, one end of the capacitor C56 is connected to GND, and the second end is connected to the VIN pin of the integrated circuit U6 and the power supply V12.

[0052] The parameters of each component in this embodiment are as follows:

[0053] R7, 1k / 0.125w; R8, 1k / 0.125w; R40, 100k / 0.125w; R41, 100k / 0.125w;

[0054] R22, 20k / 1.125w; R21, 3.6k / 0.125w; R24, 3.6k / 0.125w; R20, 4.7k / 0.125w;

[0055] R32, 20k / 1.125w; R31, 3.6k / 0.125w; R34, 3.6k / 0.125w; R30, 4.7k / 0.125w;

[0056] R50, 1k / 1.125w; R51, 1k / 0.125w; R52, 4.7k / 0.125w;

[0057] The operational amplifier U1 uses NE5532A operational amplifier, with a maximum supply voltage of DC32V, a supply current of 8mA, and a channel number of 2;

[0058] The operational amplifier U2 uses NE5532A operational amplifier, with a maximum supply voltage of DC32V, a supply current of 8mA, and a channel number of 2;

[0059] C2, 1μF / 25V; C4, 2.2μF / 50V; C6, 2.2μF / 50V; C7, 2.2μF / 50V;

[0060] C9, 1μF / 25V; C10, 1μF / 25V; C27, 2.2μF / 50V; C28, 2.2μF / 50V; C29, 0.1μF / 25V; C37, 2.2μF / 50V; C38, 2.2μF / 50V; C39, 0.1μF / 25V;

[0061] C59, 4.7μF / 50V; C54, 0.1μF / 25V; C56, 0.1μF / 25V;

[0062] Integrated circuit U6 uses RF-WM-8720-AP;

[0063] Integrated circuit U10 uses HS-SSD-E3000;

[0064] Integrated circuit U3 uses STM32F6;

[0065] V1, 5VDC; V3, 5VDC; V5, 5VDC; V8, 3.3VDC; V9, 3.3VDC; V10, 3.3VDC; V12, 5VDC; V13, 5VDC;

[0066] The crystal oscillator Y1 uses 12MHz;

[0067] Working principle of data judgment module: power supply V1 is connected to 5VDC and R24 in series to form an input step-down circuit, and the circuit filtering function is performed through capacitors C27 and C28. The positive electrode of the input data judgment power amplifier integrated circuit U1 is used as the input circuit signal judgment. After the resistors R20 and R22 are connected in series to divide the voltage and C29 is filtered, the feedback signal is input to the negative electrode of the judgment power amplifier integrated circuit U1. After the comparison result is formed, it is output to the D+ pin of the integrated circuit U3. Power supply V3 is connected to 5VDC and R34 in series to form an input step-down circuit, and the circuit filtering function is performed through capacitors C37 and C38. The positive electrode of the input data judgment power amplifier integrated circuit U2 is used as the input circuit signal judgment. After the resistors R30 and R32 are connected in series to divide the voltage and C39 is filtered, the feedback signal is input to the negative electrode of the judgment power amplifier integrated circuit U1. After the comparison result is formed, it is output to the D- pin of the integrated circuit U3.

[0068] Working principle of data storage module: power supply V9 ​​supplies power to integrated circuit U9, and matching of storage data is performed through R40 and R41, which respectively perform data storage and reading and writing.

[0069] Working principle of wireless communication module: power supplies V12 and V13 supply power to integrated circuit U6, storage data matching is performed through R50 and R51, capacitors C56 and C54 perform filtering, and finally integrated circuit U6 performs signal conversion to complete signal transmission and reception.

[0070] The special feature of the circuit design in this embodiment is that it replaces the traditional manual handheld measuring tool measurement method, reduces the uncertainty error introduced by manual measurement, and can prevent the explosion-proof joint surface from being accidentally damaged during measurement, thereby improving the detection efficiency, thereby promoting the development and application of explosion-proof inspection technology for explosion-proof electrical switches in underground coal mines.

[0071] In summary, the present invention greatly facilitates the pressure resistance test of the flameproof joint surface on the explosion-proof electrical switch for mining, so as to ensure its reliability during use, and is very practical.

[0072] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0073] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0074] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A reliability detection device for explosion-proof electrical switches for mining, characterized in that: The invention comprises a base (1), wherein protective side plates (2) are fixed on the left and right sides of the base (1), a top plate (3) is fixed on the top of the two protective side plates (2), an impact assembly (4) is arranged in the middle of the top plate (3), side seat bodies (5) are fixedly installed inside the left and right sides of the base (1), a detection frame (7) is fixedly installed in the middle of the base (1), a first pressure sensor (72) is arranged in the middle of the detection frame (7), a hydraulic rod (6) is fixedly installed on one side of the two side seat bodies (5) close to the detection frame (7), one end of the hydraulic rod (6) away from the side seat body (5) passes through the detection frame (7) and is connected to a fixed clamping plate (8), a second pressure sensor (11) is arranged on the fixed clamping plate (8), and an electrical control box is fixed on the outer wall of the protective side plate (2); and an explosion-proof electrical switch body (9) to be detected is fixedly clamped by two fixed clamping plates (8) on the left and right sides in the detection frame (7) directly below the impact assembly (4).

2. The reliability detection device for explosion-proof electrical switches for mining use according to claim 1, characterized in that: The impact assembly (4) comprises a cylinder mounting frame (41) fixedly mounted on the top of the top plate (3); an impact cylinder (42) is fixedly connected to the inside of the cylinder mounting frame (41) by bolts; a piston column (43) penetrating the top plate (3) is connected to the bottom of the impact cylinder (42); and an impact plate (44) is fixedly connected to the bottom of the piston column (43).

3. The reliability detection device for explosion-proof electrical switches for mining as claimed in claim 2, characterized in that: The impact plate (44) is integrally provided with guide blocks (45) on both left and right sides, and the inner walls of the left and right protective side plates (2) are provided with guide grooves (46) that cooperate with the guide blocks (45), and the guide blocks (45) are located in the guide grooves (46) and slide up and down.

4. The reliability detection device for explosion-proof electrical switches for mining use according to claim 1, characterized in that: A hydraulic cylinder (10) is fixedly installed inside the side seat body (5), the output end of the hydraulic cylinder (10) is keyed to one end of a hydraulic rod (6), and the other end of the hydraulic rod (6) passes through the detection frame (7) and is fixedly connected to the back of the fixed clamping plate (8).

5. The reliability detection device for explosion-proof electrical switches for mining use according to claim 1, characterized in that: The base (1) has grooves on both sides thereof, and the side seat body (5) is inserted into the grooves for fixation.

6. The reliability detection device for explosion-proof electrical switches for mining use according to claim 1, characterized in that: A resistance block (71) is embedded and installed in the middle of the detection frame (7); the bottom of the resistance block (71) is connected to the first pressure sensor (72); the top of the resistance block (71) protrudes from the lower surface of the detection frame (7); and the bottom of the resistance block (71) is in contact with the upper detection surface of the first pressure sensor (72).

7. The reliability detection device for explosion-proof electrical switches for mining use according to claim 1, characterized in that: A plurality of second pressure sensors (11) are embedded on the opposite surfaces of the two fixing clamping plates (8).

8. The reliability detection device for explosion-proof electrical switches for mining use according to claim 1, characterized in that: An electrical control box is fixed to the outer wall of the protective side plate (2) on the right side, and a central control module, a data judgment module, a data storage module and a wireless communication module are arranged in the electrical control box.

9. The reliability detection device for explosion-proof electrical switches for mining as claimed in claim 8, characterized in that: The signal input end of the central control module is connected to the first pressure sensor (72) and the data judgment module, the information input end of the data judgment module is connected to the second pressure sensor (11), and the signal output end of the central control module is connected to the impact cylinder (42), the hydraulic cylinder (10), the data storage module and the wireless communication module.

10. The reliability detection device for explosion-proof electrical switches for mining as claimed in claim 8, characterized in that: The central control circuit in the electrical control box is provided with a wireless communication module of an integrated circuit U6 of model RF-WM-8720-AP, a data judgment module, a data storage module of an integrated circuit U10 of model HS-SSD-E3000, and an integrated circuit U3 of model STM32F6.

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