A safety performance detection device for a screen door

Abstract

The present invention discloses a safety performance detection device for a screen door, which relates to the technical field of screen door safety detection. It includes a movable detection platform. The movable detection platform consists of four telescopic columns as the base, and is equipped with detachable rollers at the bottom to support rapid movement and fixation. A horizontal metal frame is arranged at the top, and the synchronous lifting with the columns is realized through a first telescopic component to adapt to the detection requirements of screen doors of different heights. A first track is arranged on the horizontal metal frame, and two driving mechanisms are controlled by a driving box to drive a first support plate to move horizontally, so as to realize the precise positioning of the detection component. An electric control telescopic rod and a modular shielding plate are configured on the front side of the detection platform. The shielding plate is alternately composed of a second telescopic component and a second support plate to form an expandable protective barrier. A single device can synchronously complete electromagnetic shielding, mechanical strength and environmental adaptability detection, avoiding the efficiency loss caused by the switching of traditional multiple devices and shortening the detection cycle.

Description

Technical Field

[0001] The present invention relates to the technical field of safety detection of screen doors, and particularly to a safety performance detection device for screen doors. Background Technique

[0002] With the rapid development of modern technology, screen doors, as an important safety device, are widely used in places such as subways, high-speed rails, hospitals, laboratories, computer rooms, data centers, etc. Their main function is to prevent people from entering dangerous areas and ensure the safety of people and machines. However, screen doors face many challenges in actual applications. First of all, the safety performance of screen doors is directly related to the safety of people and equipment. If there are faults or unstable performance in the screen doors, it may lead to safety accidents such as people being pinched or falling onto the first track, and may even cause more serious consequences. Therefore, it is particularly important to conduct regular safety performance inspections on screen doors.

[0003] Secondly, the working environment of electromagnetic signal screen doors is complex and changeable. Generally, in special places such as laboratories, the screen doors also need to meet strict shielding requirements for electromagnetic waves. These complex working environments pose higher requirements for the performance of screen doors and increase the difficulty of safety performance detection. Different scenarios need to be set in the laboratory to simulate the actual environment when conducting experiments on experimental objects. For example, when conducting experiments on experimental objects in a low-temperature environment, the screen doors will show icing phenomena caused by low temperature, which will then cause damage to the screen doors. However, the reasons for the damage cannot be understood in time. When the screen doors are damaged, personnel need to repair them. In some cases of damage, personnel cannot repair them in a short time, resulting in an increased probability of personnel being harmed by electromagnetic signals during the inspection and repair process.

[0004] In view of the above problems, the present invention proposes a safety performance detection device for electromagnetic signal screen doors, aiming to solve the deficiencies of existing detection devices and improve the comprehensiveness and accuracy of safety performance detection of screen doors. The detection device of the present invention can not only comprehensively detect the mechanical performance, electrical performance, safety performance, etc. of screen doors, but also adapt to complex and changeable working environments to ensure the accuracy and reliability of detection results. Summary of the Invention

[0005] The purpose of the present invention is to provide a safety performance detection device for screen doors to solve the problems raised in the above background technique.

[0006] To solve the above technical problems, the present invention provides the following technical solution: A safety performance detection device for screen doors. The movable detection platform consists of four telescopic columns as the base, equipped with detachable rollers at the bottom to support rapid movement and fixation; a horizontal metal frame is set at the top, and is synchronized with the columns for lifting through the first telescopic component to meet the detection requirements of screen doors at different heights.

[0007] According to the above technical solution, an electric control telescopic rod and a modular shielding plate are arranged on the front side of the detection platform. The shielding plate is alternately composed of a second telescopic component and a second support plate, forming an expandable protective barrier.

[0008] A second track is arranged on the surface of the shielding plate. The support seat can move up and down along the track, and a first receiving sensor is installed on its side wall to collect electromagnetic signals in cooperation with a second receiving sensor inside the shielding door.

[0009] According to the above technical solution, for electromagnetic shielding performance detection, by comparing the signal intensities of the first receiving sensor and the second receiving sensor, the electromagnetic attenuation value (a3 = |a1 - a2|) is calculated. If a3 ≥ the preset threshold, it is determined to be qualified.

[0010] According to the above technical solution, a dynamic loading device: a third telescopic component and a metal hammer block are arranged on the side wall of the support seat, and multi-directional loads are applied through the pressure plates at the ends of the annularly distributed fourth telescopic components.

[0011] Closed-loop feedback mechanism: Vibration sensors are installed at the four corners of the door frame, and a deformation monitoring camera is configured on the top of the support seat to monitor the deformation amount of the door gap in real time. When the deformation amount exceeds the first threshold, the impact frequency is reduced. When it exceeds the second threshold, an early warning is triggered. When it exceeds the third threshold, the loading is stopped and an alarm is given.

[0012] According to the above technical solution, a high and low temperature environment simulation chamber is installed at the top of the column through an adjustable connecting rod. A low temperature component and a high temperature component are integrated inside. The fifth and sixth telescopic components drive the simulation chamber to cover the detection area.

[0013] The intelligent temperature control compensation system maintains the working temperature of the sensor stable through the high temperature source structure and the low temperature source structure, ensuring the reliability of detection data in extreme environments.

[0014] According to the above technical solution, a first track is arranged on the horizontally placed metal frame. Two driving mechanisms are controlled by a driving box to drive the first support plate to move horizontally, realizing the precise positioning of the detection component.

[0015] The first support plate carries a robotic arm rod and a repair frame connected by a shaft ball. The repair medium is stored inside the frame and evenly coated on the defective area of the door gap through a perforated plate.

[0016] Electromagnetic shielding defect repair logic: When an unqualified area is detected, the metal hammer block is driven to hammer the door gap at an increasing frequency. If the electromagnetic attenuation value decreases with the hammering, it is determined that the seal fails. Otherwise, the sensor failure is marked.

[0017] According to the above technical solution, for electromagnetic shielding detection: The signal generator emits signals in a frequency band, and the double sensors collect data synchronously to calculate the electromagnetic attenuation value.

[0018] Mechanical strength test: The dynamic loading device applies pressure in stages, and combines deformation monitoring and vibration data to evaluate the structural stability;

[0019] Environmental simulation verification: Repeatedly detect the process in high and low temperature environments to verify the performance consistency of the shielding door;

[0020] Defect repair: Automatically trigger the repair module according to the detection results to complete the filling of the sealing medium or the structural calibration.

[0021] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: In the present invention, 1. Multi-dimensional detection integration: A single device synchronously completes electromagnetic shielding, mechanical strength, and environmental adaptability detection, avoiding the efficiency loss caused by switching between traditional multiple devices, and shortening the detection cycle.

[0022] 2. Dynamic adaptive detection: The closed-loop feedback mechanism realizes real-time optimization of detection parameters, and the height-adjustable design of the sensor supports precise adaptation to shielding doors of different sizes, reducing the detection error rate.

[0023] 3. Defect repair integration: The detection results directly drive the operation of the repair module, and the precise filling of the repair medium and mechanical calibration are carried out simultaneously, improving the repair qualification rate.

[0024] 4. Environmental simulation authenticity: The high and low temperature simulation chamber covers the detection area, combined with the temperature control compensation system, to ensure the validity of the detection data under extreme environments.

[0025] 5. Mobile deployment convenience: The telescopic columns and roller components support rapid movement and fixation, adapting to the detection needs of multiple scenarios such as subway stations and laboratories, and improving the deployment efficiency. Description of the Drawings

[0026] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0027] Figure 1 is the overall three-dimensional structure schematic diagram of the present invention Figure 1 ;

[0028] Figure 2 is the overall three-dimensional structure schematic diagram of the present invention Figure 2 ;

[0029] Figure 3 is the schematic diagram of the movable detection platform of the present invention;

[0030] Figure 4 is the schematic diagram of the frame of the present invention;

[0031] Figure 5 is the schematic diagram of the support seat structure of the present invention;

[0032] Figure 6 It is a schematic diagram of the metal hammer block of the present invention;

[0033] Figure 7 It is a schematic diagram of the high and low temperature environment simulation chamber of the present invention;

[0034] Figure 8 It is a schematic diagram of the robotic arm rod of the present invention;

[0035] Figure 9 It is a schematic diagram of the structure of the intelligent temperature control compensation system of the present invention;

[0036] Figure 10 It is a schematic diagram of the perforated plate of the present invention;

[0037] In the figure: 1, movable detection platform; 2, column; 3, horizontally placed metal frame; 4, telescopic assembly; 5, support frame; 6, drive box; 7, first track; 8, first support plate; 9, drive mechanism; 10, electric control telescopic rod; 11, shielding plate; 12, second telescopic assembly; 13, first receiving sensor; 14, second receiving sensor; 15, second track; 16, second support plate; 17, support seat; 18, third telescopic assembly; 19, metal hammer block; 20, vibration sensor; 21, deformation monitoring camera; 22, fourth telescopic assembly; 23, pressure plate; 24, adjustable connecting rod; 25, fifth telescopic assembly; 26, high and low temperature environment simulation chamber; 27, low temperature preset assembly; 28, high temperature preset assembly; 29, sixth telescopic assembly; 30, intelligent temperature control compensation system; 31, high temperature source structure; 32, low temperature source structure; 35, robotic arm rod; 36, shaft ball; 37, frame; 38, storage bin; 39, metal frame; 40, repair hole; 41, perforated plate; 42, conveying hole. Specific embodiments

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] Please refer to Figures 1-10 , the present invention provides a technical solution: a safety performance detection device for a shielding door, including a movable detection platform 1;

[0040] In the first embodiment, the bottoms of the four columns 2 included in the movable detection platform 1 can all be inserted and installed with roller assemblies. The roller assemblies are plug-in external structures for moving the movable detection platform 1. Manually push the movable detection platform 1 to position the movable detection platform 1 in front of the shielding door to be tested;

[0041] The tops of the four columns 2 form a support platform, which includes a horizontally arranged metal frame 3 fixedly installed on the tops of the columns 2. Both the horizontally arranged metal frame 3 and the columns 2 are telescopic structures, and a first telescopic component 4 is arranged in the middle part between the horizontally arranged metal frame 3 and the columns 2. By remotely controlling the telescopic movement of the horizontally arranged metal frame 3 and the columns 2, the size change process of the movable detection platform 1 can be realized, and then the shield doors of different sizes can be adapted;

[0042] A safety protection component is arranged on the front side of the movable detection platform, that is, on the side wall surface in contact with the shield door. The safety protection component includes two groups of electric control telescopic rods 10 fixedly installed on the front side wall of the movable detection platform. The two groups of electric control telescopic rods 10 are respectively arranged on the upper side and the lower side of the first telescopic component 4 of the column 2. A shielding plate 11 is fixedly installed on the two groups of electric control telescopic rods 10. The shielding plate 11 includes a number of second telescopic components 12 and a number of second support plates 16. The second telescopic components 12 and the second support plates 16 are arranged adjacent to each other. By remotely controlling the synchronous operation of the first telescopic component 4 and the second telescopic component 12, the shielding plate 11 can be telescoped along with the column 2, and then the shield doors of different sizes can be matched;

[0043] A second track 15 is installed on the contact surface of the second support plate 16. A number of support seats 17 are slidably arranged on the second track 15 from top to bottom. A first receiving sensor 13 is installed on the side wall surface of each support seat 17. Remotely controlling the lifting movement of the support seat 17 along the second track 15 drives the first receiving sensor 13 to perform lifting movement. The first receiving sensor 13 is not arranged in part of the second telescopic component 12. A number of second receiving sensors 14 are arranged on the inner frame of the shield door from top to bottom. The second receiving sensors 14 are usually in fixed positions and are pre-arranged and installed according to the size of the shield door. After the movable detection platform 1 is pushed to the unclosed shield door, by remotely controlling the movement of the first receiving sensor 13 on the second track 15 until a first receiving sensor 13 matches the signal of a second receiving sensor 14, at this time, the two are at the same height. Then, drive the movable detection platform 1 to push out, then close the shield door, and finally push the movable detection platform 1 to the position close to the shield door. The first receiving sensor 13 and the second receiving sensor 14 collect the signal intensity synchronously. The first receiving sensor 13 obtains the electromagnetic intensity a1 outside the shield door, and the second receiving sensor 14 obtains the electromagnetic intensity a2 inside the shield door. Calculate the electromagnetic attenuation value a3, and then detect whether the electromagnetic barrier safety performance of the shield door is qualified. A rated difference a4 is preset in the detection system. If a3 is greater than a4, it means that the electromagnetic barrier safety performance of the shield door is qualified, otherwise it is unqualified;

[0044] A signal generator is arranged inside the platform screen door. The signal generator emits a swept-frequency signal, and both the first receiving sensor 13 and the second receiving sensor 14 can capture and receive this signal.

[0045] In the second embodiment, a dynamic pressure loading device is arranged on the contact surface of the second support plate 16. The dynamic pressure loading device includes a third telescopic assembly 18 arranged on the side wall surface of the support base 17. The third telescopic assembly 18 adopts a hydraulic drive system and is fixed on the side wall surface of the support base 17 through a flange. The end of the third telescopic assembly 18 is fixedly installed with a metal hammer block 19 through a precision card slot. The surface of the metal hammer block 19 is coated with a 3-mm-thick oil-resistant rubber layer. The third telescopic assembly 18 is remotely controlled to drive the metal hammer block 19 to make reciprocating motions, and then drive the metal hammer block 19 to hammer the gaps at the four walls of the platform screen door. A number of fourth telescopic assemblies 22 are annularly arranged around the metal hammer block 19. The end of the fourth telescopic assembly 22 is welded with a pressure plate 23. The fourth telescopic assembly 22 is remotely driven to perform telescopic movements, driving the pressure plate 23 to expand and contract, and realizing the pressure application to the periphery of the door gap of the platform screen door during the expansion and contraction process. The modular design allows for the rapid replacement of the metal hammer block 19;

[0046] Vibration sensors 20 are arranged around the perimeter of the platform screen door frame. The vibration sensors 20 are magnetically adsorbed and installed at the four corners of the door body, and the layout spacing error is ≤0.5 mm;

[0047] A deformation monitoring camera 21 is installed on the top of the support base 17, and is equipped with a laser-assisted positioning system;

[0048] Mechanical strength detection process: The first step, pre-detection stage: Start the hydraulic synchronous calibration system matching the third telescopic assembly 18. The third telescopic assembly 18 performs 10 no-load reciprocating motions (stroke 0 - 200 mm). The vibration sensors 20 complete the acquisition of the baseline frequency, and the deformation monitoring camera 21 automatically focuses to establish a reference image of the door gap. This image is the initial image;

[0049] The second step, dynamic loading stage: The third telescopic assembly 18 drives the metal hammer block 19 to impact the door gap at a frequency of 0.5 Hz. The pressure plate 23 is synchronously started, and a load is applied through the distributed pressure plates 23 to ensure stable prerequisite conditions in the area struck by the metal hammer block 19, and reduce the amplitude of the vibration influence generated by the impact of other metal hammer blocks 19. At this time, the vibration monitoring system matching the vibration sensors 20 tracks the frequency data in real time, captures the resonance frequency shift of the door body, and obtains more accurate vibration frequency data. The deformation monitoring camera 21 automatically focuses to establish a reference image of the door gap. At this time, the gaps of the platform screen door are hammered by the metal hammer block 19. This image is the real-time image;

[0050] Step 3, closed-loop feedback stage: The deformation monitoring camera 21 automatically focuses to establish a reference image of the door gap. When the structural deformation amount on both sides of the door gap exceeds the first preset deformation data, the system automatically reduces the impact frequency to 0.2 Hz. When the structural deformation amount on both sides of the door gap exceeds the second preset deformation data, an alarm is triggered. When the structural deformation amount on both sides of the door gap exceeds the third preset deformation data, the loading is immediately stopped and an audible and visual alarm is given. The first preset deformation data is less than the second preset deformation data which is less than the third preset deformation data. A stepped preset data provides a detection standard for the shielding door undergoing mechanical strength testing, and each detection standard has a matching feedback process. The emergency stop device and the real-time monitoring mechanism ensure the safety and controllability of the detection process, and prevent damage to the equipment or the door body.

[0051] In the third embodiment, when the detection system detects that the electromagnetic shielding effect of the shielding door is unqualified, the area where the electromagnetic shielding effect is unqualified is determined, and then the support base 17 in this area is determined. Then, the metal hammer block 19 on this support base 17 is driven to increase the hammering frequency. The increase in the hammering frequency is divided into three levels, namely low frequency, medium frequency, and high frequency, and the hammering frequency of the metal hammer block 19 is gradually increased in a progressive manner. The detection system continuously obtains the a3 value on both sides of the door gap of the shielding door in this area. If the a3 value gradually decreases during the process of increasing the hammering frequency of the metal hammer block 19, it means that the door gap spacing in this area of the shielding door is unqualified. If the a3 value does not change during the process of increasing the hammering frequency of the metal hammer block 19, the detection system marks that there is a problem with the first receiving sensor 13 or the second receiving sensor 14, and manual inspection is required after the experiment. By hammering the door gap in the area where the electromagnetic shielding effect is unqualified with the metal hammer block 19, the reason for the unqualified electromagnetic shielding effect is judged. This detection method can remedy the problems that occur to the shielding door during the operation of the laboratory. The external sealing structure is used to temporarily block the door gap in this area, temporarily improving the shielding effect of the shielding door and waiting for the end of the experiment. If there is no such judgment process, it is necessary to process the area where the electromagnetic shielding effect is unqualified during each experiment, increasing the risk to personnel.

[0052] Fourth Embodiment: Adjustable connecting rods 24 are symmetrically installed at the top of the column. A fifth telescopic assembly 25 and a sixth telescopic assembly 29 are provided on the adjustable connecting rods 24. The fifth telescopic assembly 25 controls the length of the adjustable connecting rods 24, and the sixth telescopic assembly 29 controls the height of the adjustable connecting rods 24. An environmental simulation chamber 26 for high and low temperatures is fixedly installed at the end of the adjustable connecting rods 24. A low-temperature preset assembly 27 and a high-temperature preset assembly 28 are arranged inside the environmental simulation chamber 26 for high and low temperatures. Both the low-temperature preset assembly 27 and the high-temperature preset assembly 28 are structures of existing technologies, and the temperature is adjusted by blowing hot air and cold air. As the height and width of the movable detection platform 1 are adjusted, the position of the environmental simulation chamber 26 for high and low temperatures is also adjusted accordingly, so that the environmental simulation chamber 26 for high and low temperatures is located at the door gaps on both sides of the shielding door, facilitating the environmental simulation of the shielding door. The height of the environmental simulation chamber 26 for high and low temperatures is raised by remotely driving the sixth telescopic assembly 29, and then the fifth telescopic assembly 25 is driven to move the environmental simulation chamber 26 for high and low temperatures to the inner side of the shielding door. Then, the sixth telescopic assembly 29 is driven to lower the height of the environmental simulation chamber 26 for high and low temperatures. Finally, the fifth telescopic assembly 25 is driven to move the environmental simulation chamber 26 for high and low temperatures to the inner side of the shielding door and make contact, so that the environmental simulation chamber 26 for high and low temperatures and the shielding door reach a positional relationship that can realize environmental simulation. During the low-temperature environment detection, when experiments are carried out in the laboratory, experiments under extreme environments are usually available. Therefore, for the safety performance detection of the shielding door in the extremely low-temperature environment, environmental simulation is first carried out. The environmental simulation chamber 26 for high and low temperatures covers the detection area of the shielding door. The detection system is started to lower the temperature inside the environmental simulation chamber 26 for high and low temperatures to the preset low temperature, simulating the low-temperature test working conditions in the laboratory. After reaching the low-temperature environment simulation duration, the low-temperature electromagnetic shielding detection is started. The signal generator emits frequency band signals (frequently used frequency bands in experiments). The first receiving sensor 13 and the second receiving sensor 14 synchronously collect the signal intensities. The detection system obtains the data acquired by the first receiving sensor 13 and the second receiving sensor 14 and conducts analysis, and judges whether the electromagnetic signal shielding function of the shielding door is qualified in the low-temperature environment according to the judgment method of the first embodiment. Similarly, after the environmental simulation chamber 26 for high and low temperatures covers the detection area of the shielding door, the detection system is started to raise the temperature inside the environmental simulation chamber 26 for high and low temperatures to the preset high temperature, simulating the high-temperature test working conditions in the laboratory. After reaching the high-temperature environment simulation duration, the high-temperature electromagnetic shielding detection is started. The signal generator emits frequency band signals (frequently used frequency bands in experiments). The first receiving sensor 13 and the second receiving sensor 14 synchronously collect the signal intensities. The detection system obtains the data acquired by the first receiving sensor 13 and the second receiving sensor 14 and conducts analysis, and judges whether the electromagnetic signal shielding function of the shielding door is qualified in the low-temperature environment according to the judgment method of the first embodiment. Through the high and low temperature simulation chamber and the temperature control compensation system, seamless connection between the detection equipment and the real working conditions of the laboratory is realized, and a qualified detection of the real safety performance of the shielding door is made;

[0053] An intelligent temperature control compensation system 30 is arranged on one side of the first receiving sensor 13. A high temperature source structure 31 and a low temperature source structure 32 are arranged in the intelligent temperature control compensation system 30. The high temperature source structure 31 and the low temperature source structure 32 may be a hot air blower and a cold air blower. The intelligent temperature control compensation system 30 obtains the local temperature value in real time, and performs a temperature stabilization process on the first receiving sensor 13 through the high temperature source structure 31 and the low temperature source structure 32, so that the first receiving sensor 13 is always in a temperature range consistent with the surrounding environment. By simulating the environmental conditions outside and inside the shielding door, the accuracy of the detection result is further increased. The intelligent temperature control compensation system 30 is adopted to ensure that the detection accuracy is not affected by the temperature.

[0054] In the case of simulating low temperature and high temperature experimental environments, the process of the second embodiment and the process of the third embodiment may be repeated for the shielding door to determine the cause of damage to the shielding door in the low temperature and high temperature environments.

[0055] In the fifth embodiment, a kinetic energy assembly is arranged on the transverse metal frame 3, and the kinetic energy assembly includes two groups of support frames 5 symmetrically fixedly installed at the two ends of the top of the transverse metal frame 3, a driving box 6 is fixedly installed on the top of the two groups of support frames 5, a first track 7 is installed on the driving box 6, a first support plate 8 is slidably connected to the first track 7, and two groups of driving mechanisms 9 are arranged on the first support plate 8. The running state of the first support plate 8 on the first track 7 is regulated by remote control of the two groups of driving mechanisms 9, and the dual driving mechanisms 9 ensure that the moving path of the first support plate 8 is stable, and a mechanical arm rod 35 is fixedly installed at the bottom of the first support plate 8. 35 is a prior art structure, which can realize multi-angle movement. A shaft ball 36 is arranged at the bottom of the mechanical arm 35, a frame 37 is installed on the shaft ball 36, a storage bin 38 is arranged in the frame 37, and a repair medium is stored in the storage bin 38. A metal frame 39 is fixedly installed at the bottom of the frame 37, and a repair hole 40 is fixedly installed at the bottom of the metal frame 39. The repair hole 40 is connected to the storage bin 38 through a pipeline. A heating structure and a cooling structure are arranged in the storage bin 38. The heating structure is remotely controlled to heat or cool the repair medium, so that the output repair medium can adapt to the low temperature environment or high temperature environment in the simulated environment.

[0056] A pump is arranged in the storage bin 38, and the repair medium is transported from the storage bin 38 to the repair hole 40 through the pump, and finally discharged. Under normal conditions, the repair hole 40 faces downward. When the electromagnetic signal leakage of the shielding door is detected, the mechanical arm rod 35 and the shaft ball 36 are driven to operate synchronously to drive the frame 37 to move, and then drive the metal frame 39 to move, and finally drive the repair hole 40 to fit the gap of the shielding door, and start to output the repair medium to the gap, so as to temporarily improve the electromagnetic protection performance of the shielding door. This function can be used when the electromagnetic signal of the shielding door leaks in a small area;

[0057] A porous plate 41 is provided on the outer contact surface of the repair hole 40, and a plurality of conveying holes 42 are evenly provided on the surface of the porous plate 41. The repair medium stored in the storage bin 38 needs to pass through the porous plate 41 during the discharge process through the repair hole 40, and is squeezed out through the conveying holes 42 on the porous plate 41, so that the repair medium is slowly and evenly smeared on the gap of the shielding door.

[0058] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0059] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A safety performance detection device for a screen door, characterized in that, Comprising: A movable detection platform (1), which is composed of four telescopic columns (2) and is provided with a detachable roller assembly at the bottom; A support platform formed by a horizontal metal frame (3) at the top of the column (2), and the horizontal metal frame (3) and the column (2) are synchronously telescoped through a first telescopic assembly (4); A safety protection assembly, including an electric control telescopic rod (10) and a shielding plate (11) on the front side of the movable detection platform, and the shielding plate (11) is alternately composed of a second telescopic assembly (12) and a second support plate (16); A detection system, including a first receiving sensor (13) on the shielding plate (11) and a second receiving sensor (14) inside the shielding door, and calculating the electromagnetic attenuation value by comparing the signal intensities; A dynamic pressure loading device, which is arranged on the contact surface of the second support plate (16); A second track (15) is arranged on the surface of the second support plate (16) of the shielding plate (11), and a plurality of support seats (17) are slidably arranged on the second track (15) from top to bottom in sequence. A third telescopic assembly (18) is arranged on the side wall of the support seat (17), and a metal hammer block (19) is installed at the end of the third telescopic assembly (18); A fourth telescopic assembly (22) is annularly distributed around the metal hammer block (19), and a pressure plate (23) is welded at the end; Vibration sensors (20) are arranged at the four corners of the shielding door frame, and a deformation monitoring camera (21) is arranged at the top of the support seat (17); The dynamic pressure loading device executes a mechanical strength detection process, including a pre-detection, a dynamic loading and a closed-loop feedback stage; An environment simulation system: A high and low temperature environment simulation chamber (26) is installed at the top of the column (2) through an adjustable connecting rod (24), and a low temperature preset assembly (27) and a high temperature preset assembly (28) are arranged inside the chamber; The high and low temperature environment simulation chamber (26) adjusts its position through a fifth telescopic assembly (25) and a sixth telescopic assembly (29) to cover the shielding door detection area; An intelligent temperature control compensation system (30) maintains the same environmental temperature as the first receiving sensor (13) through a high temperature source structure (31) and a low temperature source structure (32); The detection system determines the safety performance of the shielding door through the following steps: The first receiving sensor (13) and the second receiving sensor (14) synchronously collect the electromagnetic intensities a1 and a2; Calculate the electromagnetic attenuation value a3 = |a1 - a2|. If a3 ≥ a preset threshold a4, it is determined to be qualified, otherwise it is unqualified.

2. The safety performance detection device for a screen door according to claim 1, wherein, The support seat (17) can be lifted along the second track (15). The first receiving sensor (13) is installed on the side wall of the support seat (17), and its matching height with the second receiving sensor (14) is adjusted through remote control.

3. The safety performance detection device for a screen door according to claim 2, characterized in that, In the closed-loop feedback stage: When the deformation monitoring camera (21) detects that the deformation amount of the door gap exceeds the first preset value, the system automatically reduces the impact frequency; When it exceeds the second preset value, a warning is triggered, and when it exceeds the third preset value, the loading is stopped and an audible and visual alarm is given.

4. The safety performance detection device for a screen door according to claim 3, characterized in that, It also includes an electromagnetic shielding defect repair system: when an unqualified electromagnetic shielding area is detected, a metal hammer block (19) of a corresponding support seat (17) is driven to hammer the door seam at an increasing frequency; if the electromagnetic attenuation value a3 decreases as the hammering frequency increases, it is determined that the door seam seal is unqualified; if a3 does not change, the sensor failure is marked.

5. The safety performance detection device for a screen door according to claim 4, characterized in that, The environment simulation system executes the following process: In a low-temperature / high-temperature environment, a signal generator emits frequency band signals, and data is synchronously collected through a first receiving sensor (13) and a second receiving sensor (14); A detection system is used to judge the electromagnetic shielding performance of the shielding door under extreme temperatures.

6. The safety performance detection device for a screen door according to claim 5, characterized in that, It also includes an automatic repair module: A kinetic energy component, including a driving box (6), a first track (7), and a movable first support plate (8) on a horizontally placed metal frame (3), and the first support plate (8) is driven by two groups of driving mechanisms (9); A robotic arm rod (35) is fixedly installed at the bottom of the first support plate (8), a shaft ball (36) is arranged at the bottom of the robotic arm rod (35), a frame (37) is installed on the shaft ball (36), a storage bin (38) is arranged inside the frame (37), a repair medium is stored in the storage bin (38), a metal frame (39) is fixedly installed at the bottom of the frame (37), a repair hole (40) is fixedly installed at the bottom of the metal frame (39), and the repair hole (40) is connected to the storage bin (38) through a pipeline.

7. The safety performance detection device for a platform screen door according to claim 6, characterized in that, The repair medium is transported to a porous plate (41) through a pump, and delivery holes (42) are evenly distributed on the surface of the porous plate (41) for evenly applying the repair medium to the door seam.

Images