CN113075583A - LED screen detection system and detection method - Google Patents
LED screen detection system and detection method Download PDFInfo
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- CN113075583A CN113075583A CN202110363982.0A CN202110363982A CN113075583A CN 113075583 A CN113075583 A CN 113075583A CN 202110363982 A CN202110363982 A CN 202110363982A CN 113075583 A CN113075583 A CN 113075583A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses an LED screen detection system and a detection method, which comprises a detection platform, wherein a water collection cavity with an upward opening is arranged in the detection platform, a filter screen support platform is fixedly connected on the inner wall of the rear side of the water collection cavity, a support plate is fixedly connected on the end surface of the rear side of the water collection cavity, a screen power supply plugging mechanism is arranged in the water collection cavity, the screen power supply plugging mechanism is used for automatically plugging a power supply, the damage of detection personnel caused by the leakage of an LED screen after waterproof detection is avoided, and a leakage detection mechanism is arranged on the detection platform. Avoid the electric shock risk when manual plug.
Description
Technical Field
The invention relates to the technical field of LED screen detection, in particular to an LED screen detection system and a detection method.
Background
An LED display screen (LED display) is a flat panel display, which is composed of small LED module panels and is used for displaying various information such as characters, images, videos and the like, the outgoing detection of the LED screen needs waterproof detection and electric leakage detection, the waterproof detection and the electric leakage detection are two processes at present, and an operator needs to manually wipe the screen after the waterproof detection, so that the detection efficiency is low, and the electric leakage detection needs to be manually plugged and unplugged, so that a certain electric shock risk exists.
Disclosure of Invention
The technical problem is as follows: at present waterproof nature detects and electric leakage detection is twice processes, and waterproof nature detects back operating personnel and need manually wipe dry the screen, leads to detection efficiency lower, and electric leakage detection needs the manual plug to have certain electric shock risk.
In order to solve the problems, the embodiment designs an LED screen detection system, which comprises a detection table, wherein a water collection cavity with an upward opening is arranged in the detection table, a filter screen support table is fixedly connected on the inner wall of the rear side of the water collection cavity, a support plate is fixedly connected on the end face of the rear side of the water collection cavity, a screen power supply plugging mechanism is arranged in the water collection cavity and is used for automatically plugging the power supply, the LED screen is prevented from generating electric leakage after waterproof detection to cause injury to detection personnel, an electric leakage detection mechanism is arranged on the detection table and is used for detecting the electric leakage of the LED screen, a screen waterproof detection mechanism is arranged on the support plate and is used for spraying water to the LED screen so as to detect the waterproof performance of the LED screen, and a screen detection post-processing mechanism is arranged on the screen waterproof detection mechanism, the screen detection post-processing mechanism is used for wiping the LED screen after waterproof detection is finished, the screen waterproof detection mechanism comprises two first support plates which are fixedly connected with the front end faces of the first support plates and are bilaterally symmetrical, slide rails are fixedly connected between the first support plates, slide blocks are connected on the slide rails in a sliding manner, spray pipes are fixedly connected on the lower end faces of the slide blocks, an impeller is fixedly connected on the first support plates on the right side, a three-way electromagnetic valve III is arranged on the lower side of the impeller, a hose II is communicated and connected between the three-way electromagnetic valve III and the spray pipes, the screen detection post-processing mechanism comprises a connecting rod III fixedly connected on the left end face of the slide block, an automatic reset cylinder I is fixedly connected on the connecting rod III, a three-way electromagnetic valve II is arranged on the automatic reset cylinder I, and a lifting rod, the improved water-absorbing device is characterized in that an impeller is fixedly connected to the lifting rod, a second rotating shaft extending forwards and backwards is arranged in the impeller, a first belt wheel is fixedly connected to the second rotating shaft, a water-absorbing roller located on the rear side of the impeller is fixedly connected to the second rotating shaft, and a fixing rod is fixedly connected to the end face of the right side of the lifting rod.
Preferably, the filter screen supporting table is provided with meshes capable of filtering water flow, the LED screen can be placed on the filter screen supporting table, a power line is arranged on the LED screen, a plug is arranged on the power line, and a return pipe is communicated and connected between the three-way electromagnetic valve III and the water collecting cavity.
Preferably, screen power grafting mechanism include fixed connection in socket on the backup pad left end face, the socket with the power cord is pegged graft, fixedly connected with is located on the backup pad left end face the automatic re-setting cylinder two of socket upside, be equipped with tee bend solenoid valve one on the automatic re-setting cylinder two, be equipped with the piston rod that extends right in the automatic re-setting cylinder two, fixedly connected with elasticity is detained on the piston rod, elasticity is detained can the centre gripping the power cord.
Preferably, the leakage detection mechanism comprises a first sliding barrel fixedly connected to the inner wall of the rear side of the water collection cavity, the first sliding barrel is open towards the right and is positioned at the upper left side of the filter screen support platform, a first guide rod is connected in the first sliding barrel in a sliding manner, a first compression spring is connected between the first guide rod and the inner wall of the left side of the first sliding barrel, the first guide rod can be abutted against the LED screen, a third sliding barrel with an open towards the right is fixedly connected to the end face of the right side of the elastic buckle, a third guide rod is connected in the third sliding barrel in a sliding manner, a third compression spring is connected between the third guide rod and the inner wall of the upper side of the third sliding barrel, the third guide rod can be abutted against the power line, a second sliding barrel with an open towards the right is fixedly connected to the end face of the front side of the support plate, the second sliding barrel is positioned at the upper left side of the third sliding barrel, a, and an electric leakage detector is fixedly connected to the supporting plate, and electric wires are electrically connected between the electric leakage detector and the second guide rod, the first guide rod and the third guide rod.
Preferably, a first rotating shaft extending forwards is arranged in the impeller, a first crank is fixedly connected to the first rotating shaft, a first connecting rod is hinged between the first crank and the sliding block, a water pump is arranged on the lower side end face of the water collecting cavity, and a water pipe is communicated and connected between the water pump and the impeller.
Preferably, fixedly connected with is located on the dead lever downside terminal surface the water catch bowl of the downside on the right side of roller that absorbs water, fixedly connected with backup pad two on the water catch bowl right side terminal surface, it is connected with pivot three that extends forward to rotate on the two front end faces of backup pad, fixedly connected with band pulley two on the three of pivot, band pulley two with be connected with the V area between the band pulley one, fixedly connected with is located on the three of pivot crank two of two front sides of band pulley, sliding connection has on the two front end faces of backup pad has the stripper plate that is located the V area rear side, the stripper plate with articulated connecting rod two between the crank two, the expert is connected with hose one on the water catch bowl downside terminal surface, a hose part is located the water collection intracavity.
Preferably, an air pump is fixedly connected to the upper side end face of the supporting plate, a hose four is connected between the air pump and the three-way electromagnetic valve two in a communicating manner, a hose five is connected between the hose four and the impeller, and a hose three is connected between the air pump and the three-way electromagnetic valve one in a communicating manner.
A detection method of an LED screen detection system comprises the following steps:
initial state: under the action of the second compression spring, the second guide rod is positioned at the right limit position, under the action of the third compression spring, the third guide rod is positioned at the lower limit position, under the action of the first compression spring, the first guide rod is positioned at the right limit position, the piston rod and the elastic buckle are positioned at the right limit position, the third hose is communicated with the second automatic reset cylinder by the first three-way electromagnetic valve, the first automatic reset cylinder is not communicated with the fourth hose by the second three-way electromagnetic valve, a certain amount of water is stored in the water collection cavity, and the impeller is communicated with the second hose by the third three-way electromagnetic valve;
when the LED screen leakage detector works, a detector places the LED screen on the filter screen supporting table, the second guide rod and the first guide rod are respectively contacted with the LED screen, the detector processes a power line to be clamped on the elastic buckle, the third guide rod is abutted to the power line, whether electric leakage exists at two positions of the LED screen and on the power line can be detected, the air pump is started to generate air flow, the air flow is conveyed into the second automatic reset air cylinder through the third hose, the piston rod drives the elastic buckle, the power line and the plug to move left, the plug is inserted into the socket, the LED screen is powered on, then the air pump is closed, and the leakage detector detects whether the LED screen and the power line leak through the electric wire, the second guide rod, the third guide;
the water pump is started to convey water in the water collecting cavity into the impeller through the water pipe, the impeller is driven to work, the air pump spray pipe drives the rotating shaft I and the crank I to rotate, the crank I drives the sliding block to move left and right in a reciprocating mode through the connecting rod, the water in the impeller is conveyed into the spray pipe through the hose II and sprayed onto the LED screen to be detected in a waterproof mode, meanwhile, a detector observes whether the LED screen works normally or not, and therefore the waterproof performance of the LED screen is detected, and the sprayed water finally flows back into the water collecting cavity;
after the waterproof performance detection is finished, the water pump is turned off, the three-way electromagnetic valve II enables the hose IV to be communicated with the automatic reset cylinder I, the air pump is turned on to generate air flow, the air flow is conveyed into the automatic reset cylinder I through the hose IV to enable the lifting rod to drive the water absorption roller to move downwards to enable the water absorption roller to be contacted with the surface of the LED screen, the three-way electromagnetic valve III enables the return pipe to be communicated with the impeller, the water pump is started to convey water into the impeller, the rotating shaft I and the crank I are started to rotate, the sliding block drives the connecting rod III, the automatic reset cylinder I and the water absorption roller to move left and right in a reciprocating mode to enable the water absorption roller to wipe off moisture on the LED screen, water in the impeller flows back to the water collecting cavity through the return pipe, meanwhile, the air flow is conveyed into the impeller through the hose IV and the hose V to enable the impeller to drive the rotating, the second belt wheel drives the third rotating shaft and the second crank to rotate, the second crank drives the extrusion plate to reciprocate left and right through the second connecting rod to extrude and dewater the water absorption roller, so that water flow is conveyed into the water collection cavity through the water collection tank and the first hose, and the wiping effect of the water absorption roller can be guaranteed;
after detection and wiping are completed, the water pump and the air pump stop working, the first automatic reset cylinder is exhausted by the action of the three-way electromagnetic valve, the lifting rod and the water absorption roller are moved upwards for resetting, the second automatic reset cylinder is exhausted by the action of the three-way electromagnetic valve, the piston rod, the elastic buckle, the power line and the plug are moved rightwards for resetting, the plug is separated from the socket, the situation that the plug is required to be manually pulled out by an operator after the LED screen is prevented from being detected out, and the probability that the operator suffers electric shock is reduced.
The invention has the beneficial effects that: the electric leakage detection mechanism and the screen waterproof detection mechanism can simultaneously perform electric leakage detection and waterproof detection on the LED screen, reduce detection procedures and improve detection efficiency, the screen can be wiped dry after the waterproof detection is completed by the screen detection post-processing mechanism, and the screen detection post-processing mechanism extrudes and recovers water absorbed by the screen on the water absorption roller, so that the wiping effect is ensured, the screen power supply plugging mechanism can automatically plug and unplug the screen plug, and the electric shock risk when the plug is plugged and unplugged manually is avoided.
Drawings
For ease of illustration, the invention is described in detail by the following specific examples and figures.
FIG. 1 is a schematic diagram of an overall structure of an LED screen inspection system according to the present invention;
FIG. 2 is an enlarged view of the structure at "A" in FIG. 1;
FIG. 3 is an enlarged view of the structure at "B" in FIG. 1;
FIG. 4 is a schematic view of the structure in the direction "C-C" of FIG. 3;
FIG. 5 is an enlarged view of the structure at "D" of FIG. 1;
fig. 6 is an enlarged view of the structure at "E" of fig. 5.
Detailed Description
The invention will now be described in detail with reference to fig. 1 to 6, for the sake of convenience of description, the following orientations are now defined: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The LED screen detection system comprises a detection table 11, wherein a water collection cavity 12 with an upward opening is arranged in the detection table 11, a filter screen support table 39 is fixedly connected to the inner wall of the rear side of the water collection cavity 12, a support plate 16 is fixedly connected to the end face of the rear side of the water collection cavity 12, a screen power supply plugging mechanism 101 is arranged in the water collection cavity 12, the screen power supply plugging mechanism 101 is used for automatically plugging a power supply to prevent an LED screen 14 from generating electric leakage to cause injury of detection personnel after waterproof detection is performed, an electric leakage detection mechanism 102 is arranged on the detection table 11, the electric leakage detection mechanism 102 is used for performing electric leakage detection on the LED screen 14, a screen waterproof detection mechanism 103 is arranged on the support plate 16, the screen waterproof detection mechanism 103 is used for spraying water on the LED screen 14 to detect the waterproof performance of the LED screen 14, and a screen detection post-processing mechanism 104 is arranged on the screen waterproof, the screen detection post-processing mechanism 104 is used for wiping the LED screen 14 after waterproof detection is completed, the screen waterproof detection mechanism 103 comprises two first support plates 19 which are fixedly connected with the front end face of the first support plate 16 and are bilaterally symmetrical, a slide rail 18 is fixedly connected between the first support plates 19, a slide block 27 is slidably connected on the slide rail 18, a spray pipe 30 is fixedly connected on the lower side end face of the slide block 27, a turbine 20 is fixedly connected on the first support plate 19 on the right side, a three-way electromagnetic valve three 68 is arranged on the lower side of the turbine 20, a hose two 17 is communicated and connected between the three-way electromagnetic valve 68 and the spray pipe 30, the screen detection post-processing mechanism 104 comprises a connecting rod three 28 fixedly connected on the left side end face of the slide block 27, an automatic reset cylinder one 29 is fixedly connected on the connecting rod three 28, and a three-way electromagnetic valve, the automatic reset cylinder I29 is internally provided with a lifting rod 31 extending downwards, the lifting rod 31 is fixedly connected with a turbine 33, a rotating shaft II 59 extending forwards and backwards is arranged in the turbine 33, the rotating shaft II 59 is fixedly connected with a belt wheel I60, the rotating shaft II 59 is fixedly connected with a water absorption roller 32 positioned at the rear side of the turbine 33, and the right end face of the lifting rod 31 is fixedly connected with a fixing rod 56.
Advantageously, the screen support platform 39 is provided with meshes capable of filtering water flow, the LED screen 14 can be placed on the screen support platform 39, the LED screen 14 is provided with a power line 37, the power line 37 is provided with a plug 44, and a return pipe 69 is connected between the three-way solenoid valve 68 and the water collection chamber 12.
Beneficially, the screen power supply plugging mechanism 101 includes a socket 36 fixedly connected to the left end face of the support plate 16, the socket 36 is plugged with the power line 37, a second automatic resetting cylinder 35 located on the upper side of the socket 36 is fixedly connected to the left end face of the support plate 16, a first three-way electromagnetic valve 46 is arranged on the second automatic resetting cylinder 35, a piston rod 50 extending rightward is arranged in the second automatic resetting cylinder 35, an elastic buckle 54 is fixedly connected to the piston rod 50, and the elastic buckle 54 can clamp the power line 37.
Beneficially, the electric leakage detecting mechanism 102 includes a first sliding barrel 38 fixedly connected to the inner wall of the rear side of the water collecting cavity 12, the first sliding barrel 38 is open towards the right and located at the upper left side of the filter screen supporting platform 39, a first guide rod 41 is slidably connected to the first sliding barrel 38, a first compression spring 43 is connected between the first guide rod 41 and the inner wall of the left side of the first sliding barrel 38, the first guide rod 41 can abut against the LED screen 14, a third sliding barrel 51 with an open towards the lower is fixedly connected to the end surface of the right side of the elastic buckle 54, a third guide rod 53 is slidably connected to the third sliding barrel 51, a third compression spring 52 is connected between the third guide rod 53 and the inner wall of the upper side of the third sliding barrel 51, the third guide rod 53 can abut against the power line 37, a second sliding barrel 47 with an open towards the right is fixedly connected to the end surface of the front side of the supporting plate 16, and the, a second guide rod 49 is connected in the second sliding cylinder 47 in a sliding mode, a second compression spring 48 is connected between the second guide rod 49 and the inner wall of the left side of the second sliding cylinder 47, the supporting plate 16 is fixedly connected with the electric leakage detector 34, and electric wires 42 are electrically connected between the electric leakage detector 34 and the second guide rod 49, the first guide rod 41 and the third guide rod 53.
Advantageously, a rotating shaft one 21 extending forwards is arranged in the impeller 20, a crank one 22 is fixedly connected to the rotating shaft one 21, a connecting rod one 24 is hinged between the crank one 22 and the sliding block 27, a water pump 40 is arranged on the lower side end face of the water collecting cavity 12, and a water pipe 13 is communicated between the water pump 40 and the impeller 20.
Beneficially, a water collecting tank 57 located at the lower right side of the water suction roller 32 is fixedly connected to an end surface of the lower side of the fixing rod 56, a second supporting plate 67 is fixedly connected to an end surface of the right side of the water collecting tank 57, a third rotating shaft 64 extending forwards is rotatably connected to an end surface of the second supporting plate 67, a second pulley 65 is fixedly connected to the third rotating shaft 64, a V-belt 61 is connected between the second pulley 65 and the first pulley 60, a second crank 66 located at the front side of the second pulley 65 is fixedly connected to the third rotating shaft 64, a squeezing plate 62 located at the rear side of the V-belt 61 is slidably connected to an end surface of the second supporting plate 67, a second connecting rod 63 is hinged between the squeezing plate 62 and the second crank 66, a first hose 15 is connected to an end surface of the lower side of the water collecting tank 57, and a portion of the hose 15.
Advantageously, an air pump 23 is fixedly connected to the upper end face of the support plate 16, a hose four 26 is connected between the air pump 23 and the three-way solenoid valve two 55, a hose five 58 is connected between the hose four 26 and the impeller 33, and a hose three 25 is connected between the air pump 23 and the three-way solenoid valve one 46.
The following describes in detail a detection method of an LED screen detection system with reference to fig. 1 to 6:
initial state: under the action of a second compression spring 48, a second guide rod 49 is positioned at the right limit position, under the action of a third compression spring 52, a third guide rod 53 is positioned at the lower limit position, under the action of a first compression spring 43, a first guide rod 41 is positioned at the right limit position, a piston rod 50 and an elastic buckle 54 are positioned at the right limit position, a first three-way electromagnetic valve 46 enables a third hose 25 to be communicated with a second automatic reset cylinder 35, a second three-way electromagnetic valve 55 enables a first automatic reset cylinder 29 to be not communicated with a fourth hose 26, a certain amount of water is stored in the water collecting cavity 12, and a third three-way electromagnetic valve 68 enables the impeller 20 to be communicated with a;
when the LED screen leakage detection device works, a detector places the LED screen 14 on the filter screen support table 39, the second guide rod 49 and the first guide rod 41 are respectively contacted with the LED screen 14, the detector processes the power line 37 and is clamped on the elastic buckle 54, the third guide rod 53 is abutted to the power line 37, whether electric leakage exists at two positions of the LED screen 14 and on the power line 37 can be detected, the air pump 23 is started to generate air flow, the air flow is conveyed into the second automatic reset air cylinder 35 through the third hose 25, the piston rod 50 drives the elastic buckle 54, the power line 37 and the plug 44 to move left, the plug 44 is inserted into the socket 36, the LED screen 14 is powered on, then the air pump 23 is turned off, and the leakage detector 34 detects whether the LED screen 14 and the power line 37 leak electricity through the electric wire 42, the second guide rod 49;
the water pump 40 is started to convey water in the water collecting cavity 12 into the impeller 20 through the water pipe 13 to drive the impeller 20 to work, the air pump 2 is used for driving the first rotating shaft 21 and the first crank 22 to rotate through the spraying pipe 30, the first crank 22 is used for driving the sliding block 27 to reciprocate left and right through the first connecting rod 24, the water in the impeller 20 is conveyed into the spraying pipe 30 through the second hose 17 and sprayed onto the LED screen 14 for waterproof detection, meanwhile, a detector is used for observing whether the LED screen 14 works normally or not, so that the waterproof performance of the LED screen 14 is detected, and the sprayed water finally flows back into the water collecting cavity 12;
after the waterproof detection is finished, the water pump 40 is turned off, the three-way electromagnetic valve II 55 enables the hose IV 26 to be communicated with the automatic resetting cylinder I29, the air pump 23 is turned on to generate air flow, the air flow is conveyed into the automatic resetting cylinder I29 through the hose IV 26 to enable the lifting rod 31 to drive the water absorbing roller 32 to move downwards to enable the water absorbing roller 32 to be contacted with the surface of the LED screen 14, the three-way electromagnetic valve III 68 enables the return pipe 69 to be communicated with the impeller 20, the water pump 40 is started to convey water into the impeller 20, the rotating shaft I21 and the crank I22 are started to rotate, the sliding block 27 drives the connecting rod III 28, the automatic resetting cylinder I29 and the water absorbing roller 32 to reciprocate left and right to enable the water absorbing roller 32 to dry the water on the LED screen 14, the water in the impeller 20 flows back into the water collecting cavity 12 through the return pipe 69, meanwhile, the air flow is conveyed into the, The belt wheel I60 and the water absorption roller 32 rotate, the water absorption roller 32 rotates to wipe the LED screen 14 dry, the belt wheel I60 drives the belt wheel II 65 to rotate through the V belt 61, the belt wheel II 65 drives the rotating shaft III 64 and the crank II 66 to rotate, the crank II 66 drives the extrusion plate 62 to reciprocate left and right through the connecting rod II 63 to extrude and dewater the water absorption roller 32, so that water flow is conveyed into the water collection cavity 12 through the water collection groove 57 and the hose I15, and the wiping effect of the water absorption roller 32 can be guaranteed;
after detection and wiping are completed, the water pump 40 and the air pump 23 stop working, the first three-way electromagnetic valve 55 acts to exhaust the first automatic reset cylinder 29, so that the lifting rod 31 and the water absorption roller 32 move upwards for resetting, and the first three-way electromagnetic valve 46 acts to exhaust the second automatic reset cylinder 35, so that the piston rod 50, the elastic buckle 54, the power line 37 and the plug 44 move rightwards for resetting, so that the plug 44 is separated from the socket 36, the situation that the LED screen 14 is still required to be manually pulled out by an operator after electric leakage is detected is avoided, and the probability that the operator suffers electric shock is reduced.
The invention has the beneficial effects that: the electric leakage detection mechanism and the screen waterproof detection mechanism can simultaneously perform electric leakage detection and waterproof detection on the LED screen, reduce detection procedures and improve detection efficiency, the screen can be wiped dry after the waterproof detection is completed by the screen detection post-processing mechanism, and the screen detection post-processing mechanism extrudes and recovers water absorbed by the screen on the water absorption roller, so that the wiping effect is ensured, the screen power supply plugging mechanism can automatically plug and unplug the screen plug, and the electric shock risk when the plug is plugged and unplugged manually is avoided.
In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.
Claims (8)
1. The utility model provides a LED screen detecting system, is including examining test table, its characterized in that: a water collecting cavity with an upward opening is arranged in the detection platform, a filter screen supporting platform is fixedly connected on the inner wall of the rear side of the water collecting cavity, a supporting plate is fixedly connected on the end face of the rear side of the water collecting cavity, a screen power supply plugging mechanism is arranged in the water collecting cavity and is used for automatically plugging a power supply, the damage of detection personnel caused by the leakage of the LED screen after waterproof detection is avoided, a leakage detection mechanism is arranged on the detection platform and is used for detecting the leakage of the LED screen, a screen waterproof detection mechanism is arranged on the supporting plate and is used for spraying water to the LED screen so as to detect the waterproof performance of the LED screen, a screen detection post-processing mechanism is arranged on the screen waterproof detection mechanism and is used for wiping the LED screen after waterproof detection is completed, the screen waterproof detection mechanism comprises two first support plates which are fixedly connected with the front end face of each support plate and are bilaterally symmetrical, a slide rail is fixedly connected between the first support plates, a slide block is connected with the slide rail in a sliding manner, a spray pipe is fixedly connected with the lower end face of the slide block, an impeller is fixedly connected with the first support plate on the right side, a third three-way electromagnetic valve is arranged on the lower side of the impeller, a hose II is communicated and connected between the third three-way electromagnetic valve and the spray pipe, the screen detection aftertreatment mechanism comprises a third connecting rod fixedly connected with the left end face of the slide block, a first automatic reset cylinder is fixedly connected with the third connecting rod, a second three-way electromagnetic valve is arranged on the first automatic reset cylinder, a lifting rod extending downwards is arranged in the first automatic reset cylinder, an impeller is fixedly connected with the lifting rod, and, the second rotating shaft is fixedly connected with a first belt wheel, the second rotating shaft is fixedly connected with a water absorbing roller located on the rear side of the turbine, and the right end face of the lifting rod is fixedly connected with a fixing rod.
2. The LED screen inspection system of claim 1, wherein: the LED screen is arranged on the filter screen supporting table, a power line is arranged on the LED screen, a plug is arranged on the power line, and a three-way electromagnetic valve III is communicated with the water collecting cavity and is connected with a return pipe.
3. The LED screen inspection system of claim 1, wherein: the screen power supply plugging mechanism comprises a socket fixedly connected to the end face of the left side of the supporting plate, the socket is plugged with the power line, the end face of the left side of the supporting plate is fixedly connected with a second automatic reset cylinder at the upper side of the socket, the second automatic reset cylinder is provided with a first three-way electromagnetic valve, a piston rod extending rightwards is arranged in the second automatic reset cylinder, the piston rod is elastically connected with a buckle, and the elastic buckle can clamp the power line.
4. An LED screen inspection system according to claim 3, wherein: the leakage detection mechanism comprises a first sliding barrel fixedly connected to the inner wall of the rear side of the water collection cavity, the first sliding barrel is provided with an opening facing the right and is positioned at the upper left side of the filter screen supporting table, a first guide rod is connected with the first sliding barrel in a sliding manner, a first compression spring is connected between the first guide rod and the inner wall of the left side of the first sliding barrel, the first guide rod can be abutted against the LED screen, a third sliding barrel with a downward opening is fixedly connected to the end face of the right side of the elastic buckle, a third guide rod is connected with the third sliding barrel in a sliding manner, a third compression spring is connected between the third guide rod and the inner wall of the upper side of the third sliding barrel, the third guide rod can be abutted against the power cord, a second sliding barrel with a right opening is fixedly connected to the end face of the front side of the supporting plate, the second sliding barrel is positioned at the upper left side of the third sliding barrel, and an electric leakage detector is fixedly connected to the supporting plate, and electric wires are electrically connected between the electric leakage detector and the second guide rod, the first guide rod and the third guide rod.
5. The LED screen inspection system of claim 4, wherein: the water collecting cavity is provided with a water collecting cavity, a rotating shaft I extending forwards is arranged in the impeller, a crank I is fixedly connected to the rotating shaft I, a connecting rod I is hinged between the crank I and the sliding block, a water pump is arranged on the lower side end face of the water collecting cavity, and a water pipe is communicated and connected between the water pump and the impeller.
6. The LED screen inspection system of claim 1, wherein: fixedly connected with is located on the dead lever downside terminal surface the water catch bowl of the lower side of roller right side, fixedly connected with backup pad two on the water catch bowl right side terminal surface, it is connected with pivot three that extends forward to rotate on the two front end faces of backup pad, fixedly connected with band pulley two on the three of pivot, band pulley two with be connected with the V area between the band pulley one, fixedly connected with is located on the three of pivot crank two of two front sides of band pulley, sliding connection has on the two front end faces of backup pad has the stripper plate that is located the V area rear side, the stripper plate with it has connecting rod two to articulate between the crank two, it is connected with hose one to lead to on the water catch bowl downside terminal surface, a hose part is located the water catch chamber.
7. The LED screen inspection system of claim 6, wherein: an air pump is fixedly connected to the upper side end face of the supporting plate, a hose IV is connected between the air pump and the three-way electromagnetic valve II in a communicating mode, a hose V is connected between the hose IV and the impeller in a communicating mode, and a hose III is connected between the air pump and the three-way electromagnetic valve I in a communicating mode.
8. The inspection method of an LED screen inspection system according to claim 7, wherein:
initial state: under the action of the second compression spring, the second guide rod is positioned at the right limit position, under the action of the third compression spring, the third guide rod is positioned at the lower limit position, under the action of the first compression spring, the first guide rod is positioned at the right limit position, the piston rod and the elastic buckle are positioned at the right limit position, the third hose is communicated with the second automatic reset cylinder by the first three-way electromagnetic valve, the first automatic reset cylinder is not communicated with the fourth hose by the second three-way electromagnetic valve, a certain amount of water is stored in the water collection cavity, and the impeller is communicated with the second hose by the third three-way electromagnetic valve;
when the LED screen leakage detector works, a detector places the LED screen on the filter screen supporting table, the second guide rod and the first guide rod are respectively contacted with the LED screen, the detector processes a power line to be clamped on the elastic buckle, the third guide rod is abutted to the power line, whether electric leakage exists at two positions of the LED screen and on the power line can be detected, the air pump is started to generate air flow, the air flow is conveyed into the second automatic reset air cylinder through the third hose, the piston rod drives the elastic buckle, the power line and the plug to move left, the plug is inserted into the socket, the LED screen is powered on, then the air pump is closed, and the leakage detector detects whether the LED screen and the power line leak through the electric wire, the second guide rod, the third guide;
the water pump is started to convey water in the water collecting cavity into the impeller through the water pipe, the impeller is driven to work, the air pump spray pipe drives the rotating shaft I and the crank I to rotate, the crank I drives the sliding block to move left and right in a reciprocating mode through the connecting rod, the water in the impeller is conveyed into the spray pipe through the hose II and sprayed onto the LED screen to be detected in a waterproof mode, meanwhile, a detector observes whether the LED screen works normally or not, and therefore the waterproof performance of the LED screen is detected, and the sprayed water finally flows back into the water collecting cavity;
after the waterproof performance detection is finished, the water pump is turned off, the three-way electromagnetic valve II enables the hose IV to be communicated with the automatic reset cylinder I, the air pump is turned on to generate air flow, the air flow is conveyed into the automatic reset cylinder I through the hose IV to enable the lifting rod to drive the water absorption roller to move downwards to enable the water absorption roller to be contacted with the surface of the LED screen, the three-way electromagnetic valve III enables the return pipe to be communicated with the impeller, the water pump is started to convey water into the impeller, the rotating shaft I and the crank I are started to rotate, the sliding block drives the connecting rod III, the automatic reset cylinder I and the water absorption roller to move left and right in a reciprocating mode to enable the water absorption roller to wipe off moisture on the LED screen, water in the impeller flows back to the water collecting cavity through the return pipe, meanwhile, the air flow is conveyed into the impeller through the hose IV and the hose V to enable the impeller to drive the rotating, the second belt wheel drives the third rotating shaft and the second crank to rotate, the second crank drives the extrusion plate to reciprocate left and right through the second connecting rod to extrude and dewater the water absorption roller, so that water flow is conveyed into the water collection cavity through the water collection tank and the first hose, and the wiping effect of the water absorption roller can be guaranteed;
after detection and wiping are completed, the water pump and the air pump stop working, the first automatic reset cylinder is exhausted by the action of the three-way electromagnetic valve, the lifting rod and the water absorption roller are moved upwards for resetting, the second automatic reset cylinder is exhausted by the action of the three-way electromagnetic valve, the piston rod, the elastic buckle, the power line and the plug are moved rightwards for resetting, the plug is separated from the socket, the situation that the plug is required to be manually pulled out by an operator after the LED screen is prevented from being detected out, and the probability that the operator suffers electric shock is reduced.
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| CN116338519A (en) * | 2023-06-01 | 2023-06-27 | 中国标准化研究院 | LED display screen detection method and detection device thereof |
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