Safety detection platform for mining metal material friction sparks

Abstract

The invention provides a safety detection platform for mining metal material friction sparks. The safety detection platform comprises a supporting frame, a drop hammer assembly, an explosion-proof box, a gas distribution assembly and a monitoring assembly. The drop hammer assembly comprises a traction rope, a traction driving part and a drop hammer, the bottom end of the traction rope is connected with the drop hammer, and the traction rope is connected with the traction driving part; the explosion-proof box is arranged at the bottom of the support frame, a test bed is arranged in the explosion-proof box, and a test plate capable of swinging up and down is arranged at the top of the test bed; the gas distribution assembly is used for introducing methane into the explosion-proof box; the monitoring assembly comprises a processing unit and a methane sensor, and the methane sensor is arranged in the explosion-proof box. According to the safety detection platform for mining metal material friction sparks, the drop hammer is controlled through the traction driving piece, the situation that the drop hammer of an existing test device needs frequent manual operation to fall and rise is avoided, the preparation time is shortened, and therefore the efficiency of the whole test is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of explosion-proof detection of metal materials, and specifically relates to a safety detection platform for friction sparks of mining metal materials. Background Art

[0002] In coal mining operations, explosion-proof diesel trackless rubber-tyred vehicles, auxiliary underground transport equipment, are responsible for transporting materials, equipment, and personnel. However, during use, high-temperature sparks can occur from friction between the vehicle and walls or from impact with equipment and instruments. Severe high-temperature sparks can cause gas or coal dust explosions, resulting in accidents. The chemical properties of metal materials are a major factor influencing the ignition potential of friction sparks. Therefore, performance testing of the metal materials used in explosion-proof diesel trackless rubber-tyred vehicles is essential to ensure safety.

[0003] The friction spark test device is mainly used to test whether the friction sparks generated by the components of explosion-proof diesel trackless rubber-tyred vehicles after being impacted by external forces can ignite explosive gases. A mixed environment of methane and air is created in the explosion-proof box, and a test plate made of the same material as the test component is placed inside the explosion-proof box. A drop hammer is released to impact the test component. However, the existing test device needs to frequently drop and rise the drop hammer during the test, and the drop hammer reset and replacement of the test component position can only be performed in an environment without methane gas. These two operations are usually performed manually and require multiple adjustments. The preparation time required for the cyclic movement of the drop hammer is long, the test efficiency is low, the workload of employees is increased, and the movement of the drop hammer poses a safety hazard to the employees. Summary of the Invention

[0004] The embodiment of the present application provides a safety detection platform for friction sparks of mining metal materials, which aims to solve the technical problem in the prior art that the frequent movement of the drop hammer in the existing test device affects the test efficiency and increases the workload of employees.

[0005] To achieve the above objectives, the technical solution adopted in this application is: Provided is a safety detection platform for friction sparks of mining metal materials, including: Support frame; A drop hammer assembly, comprising a traction rope, a traction drive, and a drop hammer, wherein the traction drive is disposed on the top of the support frame, the bottom end of the traction rope is connected to the drop hammer, the top end of the traction rope is connected to the traction drive, and the bottom of the drop hammer is connected to the test component; An explosion-proof box is provided at the bottom of the support frame, the top of the explosion-proof box is open, and the opening is aligned with the drop hammer in vertical direction. A mixed gas of air and methane is contained in the explosion-proof box. A test bench is provided in the explosion-proof box. A test plate that can swing up and down is provided on the top of the test bench, and the swing axis is parallel to the horizontal direction. The drop hammer can drive the test component into the explosion-proof box and collide with the test plate; a gas distribution assembly, connected to the explosion-proof box to introduce methane into the explosion-proof box; and The monitoring component includes a processing unit and a methane sensor. The methane sensor is arranged in the explosion-proof box, and the processing unit and the methane sensor are communicatively connected.

[0006] In a possible implementation, a vertically arranged guide tube is provided in the middle of the support frame, the bottom end of the guide tube is connected to the explosion-proof box, and the drop hammer is slidably arranged in the guide tube and the explosion-proof box along the up and down directions.

[0007] In one possible implementation, a magnetic suction cup is provided on the top of the support frame, and the magnetic suction cup is located below the traction drive component. A traction channel is provided in the middle of the magnetic suction cup, and the traction rope passes through the traction channel; the bottom of the magnetic suction cup can be magnetically connected to the drop hammer to keep the drop hammer and the support frame relatively fixed.

[0008] In one possible implementation, the bottom of one end of the test plate is hinged to the upper surface of the test bench, and the hinge axis overlaps with the swing axis of the test plate. An adjustment drive member is provided between the other end of the test plate and the test bench, and the two ends of the adjustment drive member are respectively hinged to the test plate and the test bench, and the hinge axis is parallel to the swing axis of the test plate.

[0009] In a possible implementation, the explosion-proof box further includes: A box body with an open top, an air inlet and an air outlet on one side of the box body, the air inlet and the air outlet are respectively connected to the gas distribution component, the methane sensor is installed on the inner wall of the box body, the test bench is located at the bottom of the inner cavity of the box body, and one side opening of the box body forms a pressure relief port; a pressure relief structure for sealing the pressure relief port, wherein the pressure relief structure is used to discharge the gas in the box after the gas pressure in the box exceeds a predetermined pressure value; and An explosion-proof fan is arranged at the bottom of the explosion-proof box, and is used for mixing air and methane.

[0010] In a possible implementation, a accommodating channel with openings on both sides is formed at the bottom of the test bench, the accommodating channel is communicated with the inner cavity of the box, and the explosion-proof fan is disposed in the accommodating channel.

[0011] In a possible implementation, the gas distribution assembly includes a vacuum pump and a gas cylinder, the gas cylinder contains methane, and the gas cylinder and the vacuum pump are respectively connected to the explosion-proof box.

[0012] In a possible implementation, a plurality of methane sensors are provided, and the plurality of methane sensors are spaced apart along the upper and lower directions on the inner side wall of the explosion-proof box.

[0013] In a possible implementation, the pressure relief structure further includes: A pressure relief frame is provided on the top of the box body and is located on the same side as the side where the pressure relief port is located, the pressure relief frame having a horizontal rotation axis, the axis of the horizontal rotation axis being parallel to the corresponding side of the box body; a pressure relief cloth, wound on the pressure relief frame, and the pressure relief cloth covers and blocks the pressure relief port; and The pressure sensor is installed on the inner wall of the box body on one side of which the pressure relief port is provided.

[0014] In one possible implementation, the safety detection platform for friction sparks of mining metal materials further includes a monitoring unit, the monitoring unit including a camera and a collector, the imaging area of the camera covering the area where the explosion-proof box is located, the collector being in communication with the camera, the camera being used to observe whether friction sparks are generated when the drop hammer collides with the test plate; The processing unit is communicatively connected with the collector, the gas distribution assembly and the traction drive component respectively.

[0015] The safety detection platform for friction sparks of mining metal materials provided by the present application, compared with the existing technology, controls the mixing ratio of methane and air in the explosion-proof box through a methane sensor, installs the test component on the test plate, uses the traction drive to pull the traction rope, controls the drop hammer to rise to a certain height, stops pulling the traction rope, and allows the drop hammer to freely fall into the explosion-proof box. The drop hammer is connected to the test component, and the test component collides with the test plate to achieve an impact operation. The traction drive controls the drop hammer, which avoids the need for frequent manual operation of the drop hammer to fall and rise in the existing test device, reduces preparation time, and thus improves the efficiency of the entire test. The methane sensor in the monitoring component can monitor the gas conditions in the box in real time, and the processing unit is connected to it in communication, which can provide real-time feedback to employees on the conditions in the explosion-proof box. The test is carried out in a suitable gas environment, ensuring that employees can reset the drop hammer and replace the test plate in a methane-free environment, reducing operational complexity and safety risks. The swing axis of the test plate is parallel to the horizontal direction, which can better simulate the situation where the components are subjected to external force impact in actual use, making the test results more realistic and reliable. The position of the test plate can be adjusted by swinging, avoiding the tedious process of manually adjusting the drop hammer and performing related operations multiple times, reducing the work intensity of employees, avoiding safety hazards to the employees' bodies during the movement of the drop hammer, and ensuring the safety of employees during the test process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 A schematic diagram of the structure of a safety detection platform for friction sparks of mining metal materials provided in one embodiment of the present application; Figure 2 A schematic diagram of a monitoring unit used in an embodiment of the present application; Figure 3 for Figure 1 Assembly diagram of explosion-proof box and gas distribution components used in; Figure 4 for Figure 3 The right side cross-sectional view of the explosion-proof box used in; Figure 5 This is a right side view of an explosion-proof box used in another embodiment of the present application; Figure 6 for Figure 1 Working principle diagram of the safety detection platform for friction sparks of mining metal materials; Figure 7 for Figure 1 Flowchart of the safety detection platform used for friction sparks of mining metal materials.

[0018] Description of reference numerals: 1. Support frame; 11. Guide tube; 12. Magnetic chuck; 2. Drop hammer assembly; 21. Traction rope; 22. Traction drive component; 23. Drop hammer; 3. Explosion-proof box; 31. Box body; 32. Test bench; 321. Test board; 322. Adjusting drive member; 323. Accommodating channel; 33. Pressure relief structure; 331. Pressure relief rack; 332. Pressure relief cloth; 333. Pressure sensor; 34. Explosion-proof fan; 4. Gas distribution assembly; 41. Gas cylinder; 42. Vacuum pump; 5. Methane sensor; 6. Monitoring unit; 61. Collector; 62. Camera. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0021] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0022] It should be noted that the terms "length," "width," "height," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "head," and "tail" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the application. The directional terms "inside" and "outside" refer to the inside and outside relative to the outline of each component itself.

[0023] It should also be noted that, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," "fixed," and "set" should be understood broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0024] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be subsequently positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device may also be positioned in other different ways, and the spatially relative descriptions used herein are interpreted accordingly.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referenced. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Furthermore, "plurality" and "several" mean two or more, unless otherwise specifically defined.

[0026] Please also refer to Figures 1 to 7, the safety detection platform for friction sparks of mining metal materials and its control method provided by this application are now described. A safety detection platform for friction sparks of mining metal materials includes. The safety detection platform for friction sparks of mining metal materials includes a support frame 1, a drop hammer assembly 2, an explosion-proof box 3, a gas distribution assembly 4 and a monitoring assembly; the drop hammer assembly 2 includes a traction rope 21, a traction drive 22 and a drop hammer 23, the traction drive 22 is arranged at the top of the support frame 1, the bottom end of the traction rope 21 is connected to the drop hammer 23, the top end of the traction rope 21 passes around the top of the support frame 1 and is connected to the traction drive 22, and the bottom of the drop hammer 23 is connected to the test component; the explosion-proof box 3 is arranged at the bottom of the support frame 1, the top of the explosion-proof box 3 is open, and the opening Aligned with the drop hammer 23 up and down, the explosion-proof box 3 contains a mixture of air and methane. A test bench 32 is provided in the explosion-proof box 3. A test plate 321 that can swing up and down is provided on the top of the test bench 32, and the swing axis is parallel to the horizontal direction. The drop hammer 23 can drive the test component into the explosion-proof box 3 and collide with the test plate 321; the gas distribution component 4 is connected to the explosion-proof box 3 to introduce methane into the explosion-proof box 3; the monitoring component includes a processing unit and a methane sensor 5. The methane sensor 5 is provided in the explosion-proof box 3, and the processing unit and the methane sensor 5 are communicatively connected.

[0027] It should be noted that the support frame 1 is an iron tower made of steel, and an explosion-proof box 3 is placed at the bottom of the support frame 1 so that the drop hammer 23 can accurately fall into the explosion-proof box 3 when it falls freely.

[0028] It should be noted that this application is used to simulate the friction sparks generated by the collision of explosion-proof diesel engine trackless rubber-tyred vehicle components in a mine. The gas distribution assembly 4 is used to fill the explosion-proof box 3 with methane. The methane and air mix to form a mixed gas to simulate the gas environment under the mine. Methane and air do not react. The methane sensor 5 can detect the methane concentration in the explosion-proof box 3 and transmit the data to the processing unit. The employee can obtain the data through the processing unit and then determine whether the explosion-proof box 3 has an environment that can be safely entered to adjust the test piece. The methane sensor 5 is a gas sensor. It can be a Sifang photoelectric methane sensor or an infrared methane sensor. As long as it can detect the methane gas concentration.

[0029] It should be noted that when the present invention is used for metal explosion-proof detection in other environments, methane can be replaced with other combustible gases to simulate the corresponding environment. A mixed environment of combustible gas and air is formed in the explosion-proof box 3.

[0030] It should be noted that the drop hammer 23 drives the test component to collide with the test plate 321. Whether friction sparks are generated by the collision is used to judge whether the safety performance of the test component meets the use requirements. If friction sparks are generated, it proves that the performance of the test component is unqualified. It should be noted that the traction drive member 22 adopts a winch or a traction motor, as long as it can drive the traction rope 21 to move upward during operation and does not hinder the free fall of the drop hammer 23 after stopping.

[0031] In a specific implementation, the processing unit adopts a mobile terminal or a smart terminal, such as a mobile phone or a laptop, or a PC set up in a control room to collect and process the obtained data.

[0032] It should be noted that in the mixture of methane and air, methane accounts for 5% to 15%.

[0033] Compared to the prior art, the safety testing platform for friction sparks in mining metal materials provided in this embodiment utilizes a traction drive 22 to pull the traction rope 21, controlling the drop hammer 23 to rise to a certain height. The traction rope 21 is then stopped, allowing the drop hammer 23 to freely fall into the explosion-proof box 3. A methane sensor 5 controls the methane-air mixture ratio within the explosion-proof box 3. The drop hammer 23 is connected to the test component, which then collides with the test plate 321 to achieve an impact operation. Controlling the drop hammer 23 by the traction drive 22 avoids the frequent manual lowering and raising of the drop hammer required in prior testing devices, reducing preparation time and thus improving the efficiency of the entire test. The methane sensor 5 in the monitoring assembly monitors the gas conditions within the box in real time. The processing unit communicates with the methane sensor 5, providing real-time feedback to employees on the conditions within the explosion-proof box 3. Testing is conducted in a suitable gas environment, ensuring that employees can reset the drop hammer and replace the test plate 321 in a methane-free environment, reducing operational complexity and safety risks. The swing axis of the test plate 321 is parallel to the horizontal direction, which can better simulate the situation where the components are subjected to external force impact in actual use, making the test results more realistic and reliable. The position of the test plate 321 can be adjusted by swinging, avoiding the tedious process of manually adjusting the drop hammer and performing related operations multiple times in the existing device, reducing the work intensity of employees, avoiding safety hazards to the employees' bodies during the movement of the drop hammer, and ensuring the safety of employees during the test process.

[0034] During specific implementation, the length of the traction rope 21 is fixed, which can prevent the drop hammer 23 from rolling outside the explosion-proof box 3 during free fall, thereby avoiding causing major safety accidents.

[0035] In some embodiments, see Figure 1A vertical guide tube 11 is installed in the middle of the support frame 1. The bottom end of the guide tube 11 is connected to the explosion-proof box 3. A drop hammer 23 is slidably mounted in the guide tube 11. The drop hammer 23 slides up and down along the guide tube 11, providing a precise guide path for the drop hammer during its descent and ascent, ensuring stable operation. This stable drop hammer motion reduces safety risks caused by abnormalities such as hammer wobbling, further ensuring the safety of operators and equipment during the test.

[0036] In some embodiments, see Figure 1 A magnetic suction cup 12 is provided on the top of the support frame 1. The magnetic suction cup 12 is located below the traction drive 22. A traction channel is provided in the middle of the magnetic suction cup 12, and the traction rope 21 passes through the traction channel. The bottom of the magnetic suction cup 12 can be magnetically connected to the drop hammer 23 to keep the drop hammer 23 relatively fixed to the support frame 1. During the test, the drop hammer 23 can be effectively prevented from shaking or deflecting. Employees can more conveniently control the falling position of the drop hammer 23 to ensure that the falling height of the drop hammer 23 is the same each time, thereby improving the reliability and accuracy of the test results. The magnetic connection method makes the installation and disassembly of the drop hammer 23 more convenient. It can quickly connect and separate, saving time and labor costs, and reducing the power consumption of the traction drive 22. A traction channel is provided in the middle of the magnetic suction cup 12, and the traction rope 21 passes through the channel, ensuring the smoothness of the traction action of the traction drive 22 on the drop hammer 23, thereby improving the stability and reliability of the operation of the entire drop hammer assembly 2. The drop hammer assembly 2 is stably connected to the support frame 1 through the magnetic suction cup 12, and combined with the traction drive 22 to control the movement of the drop hammer 23, it can more accurately control the drop of the drop hammer 23 and effectively detect the generation of friction sparks of mining metal materials.

[0037] In specific implementation, the drop hammer 23 is made of iron, which is convenient for being fixed by magnets.

[0038] It should be noted that the magnetic suction cup 12 adopts an electromagnetic suction cup, and the electromagnetic suction cup is communicatively connected to the mobile terminal. The magnetic suction cup 12 can be controlled to generate magnetic attraction by powering on or to eliminate magnetism by powering off, thereby increasing the convenience of connecting the magnetic suction cup 12 and the drop hammer 23.

[0039] In some embodiments, see Figure 1 and Figure 3 The bottom of one end of the test plate 321 is hinged to the upper surface of the test bench 32, and the hinge axis overlaps with the swing axis of the test plate 321. An adjustment drive member 322 is provided between the other end of the test plate 321 and the test bench 32. The two ends of the adjustment drive member 322 are respectively hinged to the test plate 321 and the test bench 32, and the hinge axis is parallel to the swing axis of the test plate 321.

[0040] In existing simulation tests, in order to improve the accuracy of the test results, the position of the test components of the drop hammer test needs to be adjusted dozens of times, which requires a lot of manpower.

[0041] The test plate 321 of this embodiment is hinged at one end to the test bench 32 at its bottom, and connected to the test bench 32 at its other end via an adjustable drive 322. The angle of the test plate 321 can be flexibly adjusted according to actual needs, thereby more accurately simulating the angle of contact between components and other objects of the coal mine's underground auxiliary transportation equipment under different operating conditions, thereby improving the accuracy and reliability of the test. By adjusting the drive 322 to change the angle between the test plate 321 and the test bench 32, the operator can quickly adjust the angle of the test plate 321 according to the test requirements. This eliminates the need for complex manual adjustment processes, allowing for more efficient preparation of test conditions, saving time and effort, and improving the efficiency of the entire testing platform. The multi-angle test plate 321 configuration allows for comprehensive testing of sparks generated by friction between mining metal materials and the drop hammer 23 at different angles, avoiding the omission of potential safety hazards due to a single angle and ensuring the comprehensiveness and integrity of safety testing for metal material friction sparks.

[0042] In some embodiments, see Figures 3 to 5 The explosion-proof box 3 also includes a box body 31, a pressure relief structure 33 and an explosion-proof fan 34; the top of the box body 31 is open, and an air inlet and an air outlet are provided on one side of the box body 31. The air inlet and the air outlet are respectively connected to the gas distribution component 4. The methane sensor 5 is installed on the inner wall of the box body 31, and the test bench 32 is provided at the bottom of the inner cavity of the box body 31. One side of the box body 31 is opened to form a pressure relief port; the pressure relief structure 33 is sealed at the pressure relief port, and the pressure relief structure 33 is used to discharge the gas in the box body 31 after the air pressure in the box body 31 exceeds a predetermined pressure value; the explosion-proof fan 34 is provided at the bottom of the explosion-proof box 3, and the explosion-proof fan 34 is used to mix air and methane.

[0043] In the existing technology, due to the influence of the quality of methane itself, methane will rise, causing the methane and air to be separated, and the methane and air cannot be quickly mixed.

[0044] It should be noted that when the test component and the test plate 321 collide and generate friction sparks, the methane will be ignited and exploded, causing the instantaneous pressure in the box 31 to increase. The pressure relief structure 33 can discharge the gas in the box 31 and reduce damage to the box 31.

[0045] The explosion-proof box 3 provided in this embodiment is easy to manufacture. Its air inlet and outlet are each connected to the gas distribution assembly 4. This allows for precise control of the mixing ratio and flow rate of air and methane within the box 3, ensuring a stable and consistent gas environment during each test, thereby improving the accuracy and repeatability of test results. A methane sensor 5, mounted on the inner wall of the box 31, accurately monitors the methane concentration within the box in real time, providing data support to the processing unit, ensuring safe testing and avoiding hazards caused by inappropriate gas concentrations.

[0046] When the pressure inside explosion-proof box 3 rises abnormally, the pressure relief port promptly releases gas, preventing the excessive pressure from causing box 31 to explode. This effectively ensures safety during the test and reduces potential risks. An explosion-proof fan 34, located at the bottom of explosion-proof box 3, accelerates the mixing of air and methane, ensuring a more even distribution of gas within the box, improving the fairness and reliability of the test and more realistically simulating actual operating conditions.

[0047] In some embodiments, see Figure 3 The bottom of the test bench 32 is provided with a receiving channel 323 with openings on both sides. The receiving channel 323 is connected to the inner cavity of the box body 31, and the explosion-proof fan 34 is arranged in the receiving channel 323. The explosion-proof fan 34 is arranged in the receiving channel 323 at the bottom of the test bench 32, so that the fan is closer to the test area, accelerating the mixing of air and methane within the shortest distance. The space inside the detection platform is fully utilized, making the internal structure of the entire explosion-proof box 3 more compact and reasonable. It avoids taking up extra space at the bottom of the explosion-proof box 3 to install the fan, simplifies the overall structure, reduces the size and complexity of the equipment, and is conducive to the installation of the equipment. It plays a protective role on the fan to a certain extent, reduces the impact of external factors on the fan, and reduces the risk of fan failure.

[0048] In some embodiments, see Figure 3 The gas distribution assembly 4 includes a vacuum pump 42 and a gas cylinder 41. The gas cylinder 41 contains methane, and the gas cylinder 41 and the vacuum pump 42 are respectively connected to the explosion-proof box 3. The vacuum pump 42 can be used to extract the air in the explosion-proof box 3 to form a certain negative pressure environment, which is convenient for controlling the gas pressure and gas content in the explosion-proof box 3; the gas cylinder 41 contains methane and is connected to the explosion-proof box 3, and can accurately deliver a specific type and concentration of methane into the explosion-proof box 3, thereby accurately simulating the actual environment containing methane in the coal mine, making the detection more targeted and accurate. The combination of the vacuum pump 42 and the gas cylinder 41 can flexibly adjust the ratio of air to methane in the explosion-proof box 3 according to the test requirements, so that the gas environment in the explosion-proof box 3 can be kept consistent during each test, thereby ensuring the repeatability of the test results.

[0049] In some embodiments, the vacuum pump 42 is connected to the housing 31 via a vent pipe, and the housing 31 is connected to the gas cylinder 41 via a vent pipe. Explosion-proof solenoid valve control switches are provided on the vent pipes between the vacuum pump 42 and the housing 31, and on the vent pipes between the housing 31 and the gas cylinder 41, respectively, to ensure the stability and safety of gas transportation.

[0050] In some embodiments, see Figure 3 Multiple methane sensors 5 are provided, spaced vertically along the inner wall of the explosion-proof box 3. These multiple methane sensors 5 can monitor the methane concentration within the explosion-proof box 3 from different heights, avoiding missing local concentration anomalies due to the limited location of a single sensor. This more accurately reflects the actual methane concentration distribution within the explosion-proof box 3, improving monitoring accuracy and reliability. Multiple methane sensors 5 operate simultaneously, so even if one sensor fails, the remaining sensors can continue to monitor gas concentration, reducing the risk of safety accidents caused by the failure of a single methane sensor 5.

[0051] In some embodiments, see Figures 3 to 5 The pressure relief structure 33 further includes a pressure relief frame 331, a pressure relief cloth 332, and a pressure sensor 333. The pressure relief frame 331 is located at the top of the box body 31 and is located on the same side as the side where the pressure relief port is located. The pressure relief frame 331 has a horizontal rotation axis, and the axis of the horizontal rotation axis is parallel to the corresponding side of the box body 31; the pressure relief cloth 332 is wound on the pressure relief frame 331, and the pressure relief cloth 332 covers and blocks the pressure relief port; the pressure sensor 333 is installed on the inner wall of the box body 31 on the side where the pressure relief port is located.

[0052] As a way of connecting the pressure relief cloth 332 and the box body 31 , a snap-in groove is opened on the corresponding side of the box body 31 . After the pressure relief cloth 332 fills the pressure relief port, sponge is filled in the snap-in groove to perform peripheral sealing of the box body 31 .

[0053] The pressure sensor 333 in the pressure relief structure 33 is installed on the inner wall of the side of the box body 31 where the pressure relief port is provided, and can accurately monitor the pressure changes in the area in real time. When the pressure rises abnormally, the pressure data can be quickly fed back to the processing unit so as to trigger the pressure relief action in time, thereby improving the response speed and safety of the explosion-proof box 3 to sudden pressure changes. The pressure relief cloth 332 is wound on the pressure relief frame 331 and covers the side where the pressure relief port is located, which can prevent foreign matter from accidentally entering the interior of the explosion-proof box 3 through the pressure relief port, avoid damage or interference to the internal detection components, and ensure the integrity and stability of the internal structure and equipment of the detection platform. Since the pressure relief cloth 332 covers a large area, it can release a large amount of gas in an instant, reduce the pressure in the explosion-proof box 3 more quickly and effectively, and reduce the risk of damage to the box body 31 and internal equipment caused by excessive pressure. The setting of the horizontal rotating shaft facilitates the winding and unfolding operations of the pressure relief cloth 332.

[0054] As a pressure relief method of the pressure relief structure 33, the top and one of the four sides of the box body 31 are open, and a pressure relief port is formed at the side opening. The pressure relief cloth 332 is a plastic cloth, and the pressure relief cloth is connected to the box body 31 to seal the pressure relief port. When the pressure relief cloth is under pressure, it deforms outward and pulls the pressure relief cloth rolled on the horizontal rotating shaft to rotate, so that the area of the pressure relief cloth becomes larger and withstands pressure.

[0055] As another pressure relief method of the pressure relief structure 33, the top and one of the four sides of the box body 31 are open, and a pressure relief port is formed at the side opening. The pressure relief cloth 332 is a plastic cloth, and the pressure relief cloth is connected to the box body 31 to seal the pressure relief port. When the pressure relief cloth is under pressure, it bursts outward to discharge the mixed gas in the box body 31. After the replacement is completed, the employee pulls down the new pressure relief cloth 332 to reseal the box body 31. The setting of the pressure relief frame 331 makes it convenient for employees to quickly remove the pressure relief cloth 332, and has timely maintenance.

[0056] As another pressure relief method of the pressure relief structure 33, the box 31 is also connected to a movable ventilation pipe. The air outlet end of the ventilation pipe leads to the outside of the factory. The shape of the air inlet end of the ventilation pipe is adapted to the pressure relief port. When friction sparks occur inside the box 31, methane explodes, and the instantaneous pressure breaks through the pressure relief cloth 332 and is discharged outside the factory along the ventilation pipe. It will not stay in the factory and bring safety hazards to the test. The ventilation pipe includes two ventilation sections and a telescopic section. The telescopic section is located between the two ventilation sections. One ventilation section is connected to the box 31 and the other is connected to the outside of the factory. The telescopic section is set with a telescopic sleeve and can change its own length. It is convenient for employees to move the ventilation pipe to install the pressure relief cloth 332 and adjust the position of the test plate 321, increasing the convenience of preparation work. After the pressure relief cloth 332 is fixed, the telescopic section is stretched and the ventilation section is reconnected to the box to prevent methane from leaking into the factory during the test.

[0057] As the connection mode of the vent pipe and the casing 31, the air inlet end of the vent pipe and the casing 31 are detachably connected and fixed together by bolts. In order to facilitate movement, a plurality of moving wheels can be installed at the bottom of the vent pipe to assist the movement of the vent pipe.

[0058] In some embodiments, see Figure 5 An air inlet and an air outlet are provided on one side of the box body 31. The air inlet is connected to the gas cylinder 41, and the air outlet is connected to the vacuum pump 42. An inflation valve is provided between the air inlet and the gas cylinder 41, and an air release valve is provided between the air outlet and the vacuum pump 42.

[0059] In some embodiments, see Figure 2The safety detection platform for friction sparks of mining metal materials also includes a monitoring unit 6, which includes a camera and a collector 61. The camera's photographic area covers the area where the explosion-proof box 3 is located. The collector 61 is communicated with the camera, and the camera is used to observe whether friction sparks are generated when the drop hammer 23 collides with the test plate 321; the processing unit is communicated with the collector 61, the air distribution component 4 and the traction drive component 22 respectively.

[0060] During specific implementation, the processing unit is also in communication connection with the magnetic chuck 12 .

[0061] The camera's photographic area covers the area where the explosion-proof box 3 is located, and it can visually observe in real time whether friction sparks are generated when the drop hammer 23 collides with the test plate 321. Direct visual monitoring is more accurate and reliable, and can capture the generation of friction sparks in a timely manner; the collector 61 is connected to the camera for collecting and recording the content captured by the camera. The processing unit is connected to the collector 61, the gas distribution component 4 and the traction drive 22, so that the entire detection platform can achieve intelligent collaborative control. The processing unit can adjust the gas supply of the gas distribution component 4 in a timely manner based on the information collected by the camera, such as whether friction sparks are generated, to ensure the stability and consistency of the test environment; at the same time, it can also control the traction drive 22 to accurately adjust the movement of the drop hammer 23, so that the test can be carried out according to the predetermined requirements, thereby improving the accuracy and repeatability of the test.

[0062] Combine Figure 6 and Figure 7 The following are the general steps for using the safety detection platform for friction sparks of mining metal materials used in one embodiment of the present application: During the preparation stage, the inspector pulls the pressure relief cloth 332 to fill the pressure relief port with plastic cloth. The inspector opens the PC to check whether the methane in the box 31, the vacuum pump 42 and the pressure sensor 333, and the explosion-proof electromagnetic valves corresponding to the air inlet and outlet of the box 31 are working properly. The PC also displays the ambient temperature and humidity at the external end of the box 31, as well as the date, and automatically fills them in the record.

[0063] At the beginning of the test, the magnetic suction cup 12 and the traction drive 22 are operated by the processing unit. The traction drive 22 pulls the traction rope 21, so that the drop hammer 23 rises to the specified height and stays still for a while. The processing unit controls the gas distribution system to start charging into the box 31, and opens the explosion-proof solenoid valve corresponding to the gas cylinder 41, so that the methane gas in the gas cylinder 41 is charged into the box 31. During the charging process, the explosion-proof fan 34 is turned on to quickly stir and evenly distribute the methane gas in the box 31. At this time, the methane sensor 5 in the box 31 is displayed by the processing unit. When the concentration difference between the two methane sensors 5 is less than 5% and both meet the standard requirements, the processing unit disconnects the explosion-proof solenoid valve on the ventilation pipe of the gas cylinder 41 and the explosion-proof fan 34. At this time, the processing unit is powered off, and the magnetic suction cup 12 causes the drop hammer 23 to fall freely onto the test plate 321, and at the same time The pressure sensor 333 and the camera in the monitoring box 31 are turned on, and the average value of the methane sensor 5 at this time is recorded. After the drop hammer test is completed, the inspection personnel observe the pressure sensor 333 and the camera connected to the processing unit to determine whether the test is qualified or not. When the test is qualified, the processing unit automatically controls the displacement of the adjustment drive 322 under the test plate 321. If the methane concentration in the processing unit monitoring box 31 is not up to the standard requirement, the gas cylinder 41 and the box 31 are connected, and the corresponding explosion-proof solenoid valve is opened to flush methane gas into the box 31. When the concentration reaches the standard, it is ready for the next test. This process is repeated 32-34 times. If the inspection personnel observe that the data transmitted by the pressure sensor 333 is abnormally increased or friction sparks are found in the picture of the high-definition camera, it is determined that the test has failed. Otherwise, the safety of the mining metal material is qualified.

[0064] After the test is completed, the processing unit closes the explosion-proof solenoid valve, opens the vacuum pump 42 and the explosion-proof solenoid valve corresponding to the vacuum pump 42, and releases the methane in the box 31 into the safe area until the methane sensor 5 in the box 31 stops alarming. All power supplies are disconnected, and the record is completed at this time. The test personnel prints it out and signs it for storage, and the test is completed.

[0065] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A safety detection platform for friction sparks of mining metal materials, characterized in that: include: Support frame; A drop hammer assembly, comprising a traction rope, a traction drive, and a drop hammer, wherein the traction drive is disposed on the top of the support frame, the bottom end of the traction rope is connected to the drop hammer, the top end of the traction rope is connected to the traction drive, and the bottom of the drop hammer is connected to the test component; An explosion-proof box is provided at the bottom of the support frame, the top of the explosion-proof box is open, and the opening is aligned with the drop hammer in vertical direction. A mixed gas of air and methane is contained in the explosion-proof box. A test bench is provided in the explosion-proof box. A test plate that can swing up and down is provided on the top of the test bench, and the swing axis is parallel to the horizontal direction. The drop hammer can drive the test component into the explosion-proof box and collide with the test plate; a gas distribution assembly, connected to the explosion-proof box to introduce methane into the explosion-proof box; as well as The monitoring component includes a processing unit and a methane sensor. The methane sensor is arranged in the explosion-proof box, and the processing unit and the methane sensor are communicatively connected.

2. The safety detection platform for friction sparks of mining metal materials according to claim 1, characterized in that: A vertically arranged guide tube is provided in the middle of the support frame, the bottom end of the guide tube is communicated with the explosion-proof box, and the drop hammer is slidably arranged in the guide tube along the up and down directions.

3. The safety detection platform for friction sparks of mining metal materials according to claim 1, characterized in that: A magnetic suction cup is provided on the top of the support frame, and the magnetic suction cup is located below the traction drive component. A traction channel is provided in the middle of the magnetic suction cup, and the traction rope passes through the traction channel; the bottom of the magnetic suction cup can be magnetically connected to the drop hammer to keep the drop hammer and the support frame relatively fixed.

4. The safety detection platform for friction sparks of mining metal materials according to claim 1, characterized in that: The bottom of one end of the test plate is hinged to the upper surface of the test bench, and the hinge axis overlaps with the swing axis of the test plate. An adjustment drive member is provided between the other end of the test plate and the test bench. The two ends of the adjustment drive member are respectively hinged to the test plate and the test bench, and the hinge axis is parallel to the swing axis of the test plate.

5. The safety detection platform for friction sparks of mining metal materials according to claim 1, characterized in that: The explosion-proof box also includes: A box body with an open top, an air inlet and an air outlet on one side of the box body, the air inlet and the air outlet are respectively connected to the gas distribution component, the methane sensor is installed on the inner wall of the box body, the test bench is located at the bottom of the inner cavity of the box body, and one side opening of the box body forms a pressure relief port; a pressure relief structure for sealing the pressure relief port, wherein the pressure relief structure is used to discharge the gas in the box after the gas pressure in the box exceeds a predetermined pressure value; and An explosion-proof fan is arranged at the bottom of the explosion-proof box, and is used for mixing air and methane.

6. The safety detection platform for friction sparks of mining metal materials according to claim 5, characterized in that: A accommodating channel with openings on both sides is provided at the bottom of the test bench. The accommodating channel is communicated with the inner cavity of the box. The explosion-proof fan is arranged in the accommodating channel.

7. The safety detection platform for friction sparks of mining metal materials according to claim 1, characterized in that: The gas distribution assembly includes a vacuum pump and a gas cylinder. The gas cylinder contains methane. The gas cylinder and the vacuum pump are respectively connected to the explosion-proof box.

8. The safety detection platform for friction sparks of mining metal materials according to claim 1, characterized in that: There are multiple methane sensors, and the multiple methane sensors are arranged at intervals along the upper and lower directions on the inner wall of the explosion-proof box.

9. The safety detection platform for friction sparks of mining metal materials according to claim 5, characterized in that: The pressure relief structure further comprises: a pressure relief frame, disposed on the top of the box, the pressure relief frame having a horizontal rotation axis, the axis of the horizontal rotation axis being parallel to the corresponding side of the box; a pressure relief cloth, wound on the pressure relief frame, and the pressure relief cloth covers and blocks the pressure relief port; and The pressure sensor is installed on the inner wall of the box body on one side of which the pressure relief port is provided.

10. The safety detection platform for friction sparks of mining metal materials according to claim 1, characterized in that: The safety detection platform for friction sparks of mining metal materials further includes a monitoring unit, which includes a camera and a collector. The camera's imaging area covers the area where the explosion-proof box is located. The collector is in communication with the camera. The camera is used to observe whether friction sparks are generated when the drop hammer collides with the test plate. The processing unit is communicatively connected with the collector, the gas distribution assembly and the traction drive component respectively.

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