Entrance guard explosion-proof junction box strength detection device and method

Abstract

The invention relates to the technical field of junction box detection, and discloses an entrance guard explosion-proof junction box strength detection device and method.The entrance guard explosion-proof junction box strength detection device comprises a connecting frame and a box body, the outer side of the box body is connected with a plurality of sets of wiring pipes, the upper end of the connecting frame is fixedly connected with two sets of fixing plates, and a conveying belt is jointly and rotationally connected between the two sets of fixing plates; a hammering mechanism is arranged above the conveying belt, an overturning mechanism is arranged at the rear end of the hammering mechanism, and a transferring mechanism is arranged at the rear end of the connecting frame. The device has the advantages that the strength change of the box body when the box body is subjected to different impact objects can be detected, and the situation that the box body falls onto the ground can be simulated, so that the strength change of the box body when the box body collides with the ground in reality can be detected, the strength detection is more comprehensive, and the detection test is more real and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of junction box detection, and in particular to a strength detection device and method for an access control explosion-proof junction box. Background Art

[0002] A junction box is a device used to connect electrical circuits. It is usually made of plastic or metal and has multiple terminals inside for fixing wires and connecting them. In home decoration, the junction box is one of the electrical auxiliary materials and is mainly used for the joints of wires. If the line is long or the wire tube needs to turn a corner, the junction box can also be used as a transition to protect and connect the wires. The junction box is usually composed of several parts such as a box cover, a box body, a branching tube, a diode, and a connector.

[0003] However, when testing the strength of the junction box, considering the collision problem that the plastic junction box may encounter during actual use, multiple impact forms should be adopted to test the strength of the box, and when the collision detects that the box is of unqualified quality, it is also necessary to avoid the box fragments from popping out; for this reason, we propose a strength testing device and method for access control explosion-proof junction boxes. Summary of the invention

[0004] The present invention adopts the following technical scheme to solve the above-mentioned technical problems: a strength detection device for an access control explosion-proof junction box is provided, comprising a connecting frame and a box body, wherein a plurality of wiring tubes are connected to the outer side of the box body, two sets of fixed plates are fixedly connected to the upper end of the connecting frame, a conveyor belt is rotatably connected between the two sets of fixed plates, a hammer mechanism is arranged above the conveyor belt, a flip mechanism is arranged at the rear end of the hammer mechanism, a transfer mechanism is arranged at the rear end of the connecting frame, a plurality of support frames are arranged on the surface of the conveyor belt, a connecting groove is opened on the inner side of the support frame, the lower end of the box body is matched with the connecting groove, the hammer mechanism comprises a top plate, a movable plate is fixedly connected to the rear end of the top plate, a rotating block is rotatably connected to the inner side of the movable plate.

[0005] Preferably, the front end of the rotating block is fixedly connected to a fixing rod, the front end of the fixing rod is fixedly connected to a first fixing ring and a second fixing ring, the inner sides of the first fixing ring and the second fixing ring are fixedly connected to connecting tubes, the two groups of connecting tubes are symmetrical to each other, the lower end of the connecting tube is fixedly connected to a hammer block, and a protrusion is provided on the upper end of one of the two groups of hammer blocks.

[0006] Preferably, a protective cover is movably connected to the outer side of the hammer block, a slot is provided at the lower end of the protective cover, the slot fits with the branch pipe, a first slide groove is provided on the outer side of the protective cover, a first slider is slidably connected to the inner side of the first slide groove, and the first slider passes through the first slide groove and is fixedly connected to the hammer block.

[0007] Preferably, the upper end of the first slider is fixedly connected to a baffle rod, the upper end of the baffle rod is fixedly connected to a slide rod, the outer side of the slide rod is movably connected to a connecting block, the connecting block is fixedly connected to the outer side of the protective cover, a spring is movably connected between the connecting block and the first slider, and the spring is wound around the outer side of the baffle rod.

[0008] Preferably, the upper ends of the two groups of fixed plates are commonly fixedly connected to a mounting plate 1, the rear end of the mounting plate 1 is fixedly connected to two groups of partitions, the upper ends of the two groups of partitions are fixedly connected to arc blocks, the two groups of arc blocks are symmetrical to each other, the outer sides of the first fixing ring and the second fixing ring are commonly fixedly connected to a limiting plate, the limiting plate is movably connected between the two groups of partitions, the rear end of one of the two groups of fixed plates is fixedly connected to a support block, the upper end of the support block is mounted with a cylinder, and the output end of the cylinder is fixedly connected to the top plate.

[0009] Preferably, the flip mechanism includes a mounting plate 2, the front end of the mounting plate 2 is slidably connected to the first rack, one side of the first rack is meshed with the first gear, the front end of the first gear is fixedly connected to a rotating rod, the front end of the rotating rod is fixedly connected to the rotating block, the front end of the mounting plate 2 is provided with a second sliding groove, the inner side of the second sliding groove is slidably connected to the second sliding block, the front end of the second sliding block is fixedly connected to the moving rod, one side of the moving rod is fixedly connected to the first rack, the front end of the moving rod is fixedly connected to block 1 and block 2, the outer side of the block 2 is movably connected to the first connecting rod, the front end of the first connecting rod is fixedly connected to the moving plate, and the rear end of the moving plate is fixedly connected to the second connecting rod.

[0010] Preferably, the lower end of the connecting frame is fixedly connected to two groups of sub-plates, the outer sides of the sub-plates are movably connected to the main boards, the lower ends of the two groups of main boards are commonly fixedly connected to base two, the upper end of the base two is equipped with electric push rod two, the output end of the electric push rod two is fixedly connected to the connecting frame, the transfer mechanism includes a first baffle plate and a second baffle plate, the front ends of the first baffle plate and the second baffle plate are commonly fixedly connected to the main board, the lower end of the first baffle plate is fixedly connected to base one, and the front end of the base one is fixedly connected to base two.

[0011] Preferably, the upper end of the base one is movably connected to a rotating plate, one side of the rotating plate is fixedly connected to a rotating cylinder, the rotating cylinder is rotatably connected to a fixed cylinder via a rotating shaft, the outer side of the fixed cylinder is fixedly connected to the base one, the upper end of the rotating plate is fixedly connected to a first support ear, the lower end of the second baffle is rotatably connected to a third baffle, the other side of the third baffle is fixedly connected to a second support ear, and the second support ear and the rear end of the first support ear are rotatably connected to an extension rod.

[0012] Preferably, a collecting trough is fixedly connected to one side of the base, an electric push rod is installed at the rear end of the collecting trough, a second rack is fixedly connected to the output end of the electric push rod, a second gear is meshed at the upper end of the second rack, a front end of the second gear is fixedly connected to the rotating drum, two groups of rollers are rotatably connected between the two groups of fixed plates, the rollers are rotatably connected to the inner side of the conveyor belt, a servo motor is installed at the rear end of one of the two groups of fixed plates, the output end of the servo motor is fixedly connected to the roller, a support plate is fixedly connected between the two groups of fixed plates, and the support plate is located on the inner side of the conveyor belt.

[0013] A method for detecting the strength of an access control explosion-proof junction box comprises the following steps: S1: Place the boxes on the inner side of the connecting groove in sequence, start the servo motor and set instructions for it to drive the conveyor belt to transport the boxes to the bottom of the protective cover and then stop moving, then start the cylinder. The output end of the cylinder drives the top plate to move downward during the recycling process, and then the moving plate drives the protective cover to move downward at the same time; S2: As the moving plate continues to move downward, when the first gear stops meshing with the first rack, the first connecting rod pushes the second stopper to move horizontally to one side with the first rack as the moving plate moves downward, and then the protective cover first contacts the box body and makes the slot engage with the outer side of the branch pipe, and then the hammer block continues to move downward and hits the box body; S3: After the first group of hammers collides with the box body, the cylinder pushes the top plate upward. During the process, the second connecting rod contacts the stopper 1 and pushes the stopper 1 to move back with the first rack. Then the output end of the cylinder continues to retract, so that the top plate moves downward, and the first gear meshes with the first rack, prompting the two groups of hammers to flip, so that the group of hammers with the protrusions flips to the lower side, and then moves downward and collides with the box body; S4: After the impact on the box body is completed, the servo motor starts again to transport the tested box body, and the next group of box bodies to be tested are then transported to the bottom of the hammer mechanism. Then the tested box body falls into the transfer mechanism under the conveyor belt and falls on the turntable. The electric push rod 1 is started to push the second rack to engage with the second gear, so that the turntable flips over and the tested box body is turned over to the collection tank.

[0014] Compared with the prior art, the present invention provides a strength detection device and method for an access control explosion-proof junction box, which has the following beneficial effects: 1. A strength detection device and method for an access control explosion-proof junction box, which pushes a movable plate up and down by a cylinder, and under the meshing of a first gear and a first rack, two groups of hammer blocks are flipped back and forth to impact the box body, and the strength change of the box body under a flat impact object and the strength change of a convex impact object can be detected, making the strength detection more comprehensive.

[0015] 2. This access control explosion-proof junction box strength detection device and method, when the box body passes the impact detection, it will fall onto the rotating plate when it is transferred with the conveyor belt. This action can simulate the situation that when the box body is installed on the wall in reality, it falls to the ground due to external factors, thereby detecting the strength change of the box body when it collides with the ground in reality, and adjusting the height by the electric push rod 2, making the detection test more real and reliable.

[0016] 3. A strength detection device and method for an access control explosion-proof junction box. When the hammer block moves down to prepare to hit the box body, the protective cover will first contact the box body and make the card slot engage on the outside of the branch pipe. Under the connection of the spring, it will pull the connection block to a certain extent, so that the protective cover will produce a certain downward force to press on the branch pipe, fix the box body, avoid movement during impact, and affect the impact effect. When hitting a box body of unqualified quality, the protective cover can effectively block the fragments from popping out to avoid scratching the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Partial structural explosion of the present invention Figure 1 ; Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure of part A; Figure 4 Partial structural explosion of the present invention Figure 2 ; Figure 5 For the present invention Figure 4 Schematic diagram of the local structure in; Figure 6 The hammer mechanism of the present invention is cut away Figure 1 ; Figure 7 The hammer mechanism of the present invention is cut away Figure 2 ; Figure 8 The hammer mechanism of the present invention is cut away Figure 3 ; Fig. 9 It is a cross-sectional view of the turning mechanism of the present invention; Fig.10 It is an exploded view of the flipping mechanism of the present invention; Fig.11 It is a schematic diagram of the transfer mechanism of the present invention; Fig.12 It is an exploded view of the transfer mechanism of the present invention.

[0018] In the figure: 1, connecting frame; 2, box body; 3, fixed plate; 4, conveyor belt; 5, hammer mechanism; 51, top plate; 52, moving plate; 53, rotating block; 54, fixing rod; 55, first fixing ring; 56, second fixing ring; 57, connecting tube; 58, hammer block; 59, protrusion; 510, protective cover; 511, card slot; 512, first slide slot; 513, first slide block; 514, stop rod; 515, slide rod; 516, connecting block; 517, spring; 518, mounting plate 1; 519, partition; 520, arc block; 521, limit plate; 522, support block; 523, cylinder; 6, flip mechanism; 61, mounting plate 2; 62, first rack; 63, first gear; 64 , rotating rod; 65, second slide groove; 66, second slider; 67, moving rod; 68, block one; 69, block two; 610, first connecting rod; 611, second connecting rod; 7, transfer mechanism; 71, first baffle; 72, second baffle; 73, base one; 74, rotating plate; 75, rotating cylinder; 76, fixed cylinder; 77, first ear; 78, third baffle; 79, second ear; 710, extension rod; 711, collecting trough; 712, electric push rod one; 713, second rack; 714, second gear; 8, support frame; 9, connecting groove; 10, sub-plate; 11, main board; 12, base two; 13, electric push rod two; 14, roller; 15, servo motor; 16, support plate. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] See also Figure 1 - Fig.12 A strength detection device for an access control explosion-proof junction box comprises a connecting frame 1 and a box body 2. The outer side of the box body 2 is connected to multiple groups of wiring pipes. Two groups of fixed plates 3 are fixedly connected to the upper end of the connecting frame 1. A conveyor belt 4 is rotatably connected between the two groups of fixed plates 3. A hammer mechanism 5 is arranged above the conveyor belt 4. A flip mechanism 6 is arranged at the rear end of the hammer mechanism 5. A transfer mechanism 7 is arranged at the rear end of the connecting frame 1. Multiple groups of support frames 8 are arranged on the surface of the conveyor belt 4. A connecting groove 9 is opened on the inner side of the support frame 8. The lower end of the box body 2 is matched with the connecting groove 9. The hammer mechanism 5 comprises a top plate 51. A movable plate 52 is fixedly connected to the rear end of the top plate 51. A rotating block 53 is rotatably connected to the inner side of the movable plate 52.

[0021] In this embodiment, the front end of the rotating block 53 is fixedly connected to a fixing rod 54, the front end of the fixing rod 54 is fixedly connected to a first fixing ring 55 and a second fixing ring 56, the inner sides of the first fixing ring 55 and the second fixing ring 56 are fixedly connected to connecting tubes 57, the two groups of connecting tubes 57 are symmetrical to each other, the lower end of the connecting tube 57 is fixedly connected to a hammer block 58, and a protrusion 59 is provided on the upper end of one of the two groups of hammer blocks 58.

[0022] Specifically, a protrusion 59 provided on one group of hammer blocks 58 is used to detect the strength change of the box body 2 under a flat impact object and the strength change of the box body 2 under a convex impact object. The rotating block 53 is fixedly connected to the fixing rod 54. When the rotating block 53 is rotated under force, the two groups of hammer blocks 58 are flipped.

[0023] In this embodiment, a protective cover 510 is movably connected to the outer side of the hammer block 58, a slot 511 is provided at the lower end of the protective cover 510, and the slot 511 is matched with the branch pipe, a first slide groove 512 is provided on the outer side of the protective cover 510, a first slider 513 is slidably connected to the inner side of the first slide groove 512, the first slider 513 passes through the first slide groove 512 and is fixedly connected to the hammer block 58, a blocking rod 514 is fixedly connected to the upper end of the first slider 513, a sliding rod 515 is fixedly connected to the upper end of the blocking rod 514, a connecting block 516 is movably connected to the outer side of the sliding rod 515, the connecting block 516 is fixedly connected to the outer side of the protective cover 510, a spring 517 is movably connected between the connecting block 516 and the first slider 513, and the spring 517 is wound around the outer side of the blocking rod 514.

[0024] Specifically, the first slider 513 will slide inside the first slide groove 512 as the hammer block 58 moves downward, and will pull the connecting block 516 to a certain extent under the connection of the spring 517, so that the protective cover 510 generates a certain force to exert pressure on the branch pipe to fix the box body 2.

[0025] In this embodiment, the upper ends of the two groups of fixed plates 3 are commonly fixedly connected with a mounting plate 518, and the rear ends of the mounting plate 518 are fixedly connected with two groups of partitions 519. The upper ends of the two groups of partitions 519 are fixedly connected with arc blocks 520, and the two groups of arc blocks 520 are symmetrical to each other. The outer sides of the first fixing ring 55 and the second fixing ring 56 are commonly fixedly connected with a limiting plate 521, and the limiting plate 521 is movably connected between the two groups of partitions 519. The rear end of one of the two groups of fixed plates 3 is fixedly connected with a support block 522, and a cylinder 523 is installed on the upper end of the support block 522, and the output end of the cylinder 523 is fixedly connected to the top plate 51.

[0026] Specifically, after the box body 2 moves to the bottom of the protective cover 510, the cylinder 523 starts to work. The output end of the cylinder 523 drives the top plate 51 to move downward during the recovery process. During the process, the positions of the two groups of hammer blocks 58 will be flipped, and then the limit plate 521 will enter between the two groups of partition plates 519 to prevent the rotating block 53 from rotating and limit the path of the hammer block 58 when it collides with the box body 2.

[0027] In this embodiment, the flip mechanism 6 includes a mounting plate 61, the front end of the mounting plate 61 is slidably connected to the first rack 62, one side of the first rack 62 is meshed with the first gear 63, the front end of the first gear 63 is fixedly connected to the rotating rod 64, the front end of the rotating rod 64 is fixedly connected to the rotating block 53, the front end of the mounting plate 61 is provided with a second sliding groove 65, the inner side of the second sliding groove 65 is slidably connected to the second slider 66, the front end of the second slider 66 is fixedly connected to the moving rod 67, one side of the moving rod 67 is fixedly connected to the first rack 62, the front end of the moving rod 67 is fixedly connected to the block 1 68 and the block 2 69, the outer side of the block 2 69 is movably connected to the first connecting rod 610, the front end of the first connecting rod 610 is fixedly connected to the moving plate 52, and the rear end of the moving plate 52 is fixedly connected to the second connecting rod 611.

[0028] Specifically, as the movable plate 52 continues to move downward, when the first gear 63 stops meshing with the first rack 62, the first connecting rod 610 will push the second stopper 69 and the first rack 62 to move horizontally to one side as the movable plate 52 moves downward, so that the first gear 63 will not mesh with the first rack 62 in the process of moving the movable plate 52 upward. Then, after the first impact, the cylinder 523 will push the top plate 51 upward. During this process, the second connecting rod 611 will contact the first stopper 68 and push the first stopper 68 to move back with the first rack 62. Then, the output end of the cylinder 523 will be recovered again, so that the top plate 51 moves downward, and the first gear 63 will mesh with the first rack 62, causing the positions of the two groups of hammer blocks 58 to be flipped.

[0029] In this embodiment, two groups of sub-plates 10 are fixedly connected to the lower end of the connecting frame 1, and the outer sides of the sub-plates 10 are movably connected to the main board 11. The lower ends of the two groups of main boards 11 are commonly fixedly connected to a base 2 12, and an electric push rod 2 13 is installed on the upper end of the base 2 12. The output end of the electric push rod 2 13 is fixedly connected to the connecting frame 1, and the transfer mechanism 7 includes a first baffle 71 and a second baffle 72. The front ends of the first baffle 71 and the second baffle 72 are commonly fixedly connected to the main board 11, and the lower end of the first baffle 71 is fixedly connected to a base 1 73, and the front end of the base 1 73 is fixedly connected to the base 2 12.

[0030] Specifically, the box body 2 after detection falls into the transfer mechanism 7 under the transportation of the conveyor belt 4, and falls on the rotating plate 74. This action produces a third impact on the box body 2 to simulate the situation that the box body 2 falls to the ground due to external factors when it is installed on the wall in reality, and by starting the electric push rod 2 13, the height position of the connecting frame 1 is adjusted to detect the strength change of the box body 2 when it falls from different heights.

[0031] In this embodiment, the upper end of the base 73 is movably connected with a rotating plate 74, one side of the rotating plate 74 is fixedly connected with a rotating drum 75, the rotating drum 75 is rotatably connected with a fixed drum 76 through a rotating shaft, the outer side of the fixed drum 76 is fixedly connected to the base 73, the upper end of the rotating plate 74 is fixedly connected with a first ear 77, the lower end of the second baffle plate 72 is rotatably connected with a third baffle plate 78, the other side of the third baffle plate 78 is fixedly connected with a second ear 79, the second ear 79 and the rear end of the first ear 77 are rotatably connected with an extension rod 710, one side of the base 73 is fixedly connected with a collecting tank 711, the collecting tank 711 An electric push rod 712 is installed at the rear end, and a second rack 713 is fixedly connected to the output end of the electric push rod 712. A second gear 714 is meshed with the upper end of the second rack 713. The front end of the second gear 714 is fixedly connected to the rotating drum 75. Two groups of rollers 14 are rotatably connected between the two groups of fixed plates 3. The rollers 14 are rotatably connected to the inner side of the conveyor belt 4. A servo motor 15 is installed at the rear end of one of the two groups of fixed plates 3. The output end of the servo motor 15 is fixedly connected to the rollers 14. A support plate 16 is fixedly connected between the two groups of fixed plates 3. The support plate 16 is located on the inner side of the conveyor belt 4.

[0032] Specifically, the electric push rod 712 is started to push the second rack 713 to make it mesh with the second gear 714, so that the rotating drum 75 rotates, driving the rotating plate 74 to flip. At the same time, under the connection of the extension rod 710, the third baffle 78 can be opened during the flipping of the rotating plate 74, so that the box body 2 after the inspection is completed enters the collection groove 711, waiting for the staff to carry out the next inspection.

[0033] A method for detecting the strength of an access control explosion-proof junction box comprises the following steps: S1: The box bodies 2 are placed inside the connecting grooves 9 in sequence, and the servo motor 15 is started and set with instructions to drive the conveyor belt 4 to transport the box bodies 2 to the bottom of the protective cover 510 and then stop moving. Then, the cylinder 523 is started, and the output end of the cylinder 523 drives the top plate 51 to move downward during the recycling process, thereby causing the movable plate 52 to drive the protective cover 510 to move downward at the same time; S2: As the moving plate 52 continues to move downward, when the first gear 63 stops meshing with the first rack 62, the first connecting rod 610 pushes the second stopper 69 to move the first rack 62 to one side as the moving plate 52 moves downward, and then the protective cover 510 first contacts the box body 2 and makes the slot 511 engage with the outer side of the branch pipe, and then the hammer block 58 continues to move downward and hits the box body 2; S3: After the first group of hammers 58 have finished colliding with the box body 2, the cylinder 523 will push the top plate 51 upwards. During this process, the second connecting rod 611 contacts the stopper 68 and pushes the stopper 68 to move back with the first rack 62. Then the output end of the cylinder 523 continues to retract, so that the top plate 51 moves downwards, and the first gear 63 engages with the first rack 62, prompting the two groups of hammers 58 to flip, so that the group of hammers 58 with the protrusions 59 flips to the lower side, and then moves downwards and collides with the box body 2. S4: After the impact on the box body 2 is completed, the servo motor 15 is started again to transport the box body 2 after inspection, and the next group of box bodies 2 to be inspected are then transported to the bottom of the hammer mechanism 5. Then, the box body 2 after inspection falls into the transfer mechanism 7 under the transportation of the conveyor belt 4, and falls on the rotating plate 74. The electric push rod 712 is started to push the second rack 713 to make it mesh with the second gear 714, so that the rotating plate 74 is flipped, and the box body 2 after inspection is turned over to the collection groove 711.

[0034] When in use, the box bodies 2 to be tested are placed on the inner side of the connecting groove 9 in turn, and then the servo motor 15 is started and an intermittent instruction is set for it, and the conveyor belt 4 is driven to operate through the roller 14 to transport the box bodies 2 to be tested to the area of ​​the hammer mechanism 5, and after the box bodies 2 are located under the protective cover 510, the servo motor 15 stops outputting, the conveyor belt 4 stops running, and then the cylinder 523 starts working. During the recycling process, the output end of the cylinder 523 drives the top plate 51 to move downward, and then the movable plate 52 drives the protective cover 510 to move downward at the same time. During the process of the movable plate 52 continuing to move downward, when the first gear 63 stops meshing with the first rack 62, the first gear 63 stops meshing with the first rack 62. As the moving plate 52 moves downward, the first connecting rod 610 will push the second stopper 69 to move horizontally with the first rack 62 to one side, and then the protective cover 510 will first contact the box body 2 and make the slot 511 engage with the outer side of the branch pipe, and then the hammer block 58 will continue to move downward and impact the box body 2, and perform the first strength test on the box body 2. Then after the first impact, the cylinder 523 will push the top plate 51 to move upward. During this process, the second connecting rod 611 will contact the first stopper 68 and push the first stopper 68 to move back with the first rack 62, and then the output end of the cylinder 523 will be recovered again, so that the top plate 51 moves downward, and the first gear 63 will mesh with the first rack 62. The positions of the two groups of hammer blocks 58 are flipped, so that the group of hammer blocks 58 with the protrusions 59 are flipped to the lower side, and then the impact step with the first group of hammer blocks 58 is performed. When the first gear 63 stops meshing with the first rack 62, the first connecting rod 610 will push the second stopper 69 to move horizontally with the first rack 62 as the moving plate 52 moves downward again, and then the second impact test of the protrusion 59 on the box body 2 is completed. Then, under the push of the cylinder 523, the moving plate 52 moves up again. At this time, the servo motor 15 starts to run again to transport the box body 2 after the impact test. The next group of box bodies 2 to be tested will be transported to the bottom of the hammer mechanism 5, and then the tested box bodies 2 will be transported to the bottom of the hammer mechanism 5. The box body 2 falls into the transfer mechanism 7 under the conveyance of the conveyor belt 4 and falls on the rotating plate 74. This action produces a third impact on the box body 2. Then the electric push rod 1 712 is started to push the second rack 713 to make it engage with the second gear 714, so that the rotating drum 75 rotates, driving the rotating plate 74 to flip over. At the same time, under the connection of the extension rod 710, the third baffle 78 can be opened during the flipping of the rotating plate 74, so that the box body 2 after the inspection is completed enters the collecting tank 711 and waits for the staff to carry out the next step of processing. In addition, by starting the electric push rod 2 13, the height position of the connecting frame 1 is adjusted to detect the strength change of the box body 2 when it falls from different heights.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A strength detection device for an access control explosion-proof junction box, comprising a connecting frame (1) and a box body (2), characterized in that: The outer side of the box body (2) is connected to a plurality of wiring tubes. The upper end of the connecting frame (1) is fixedly connected to two groups of fixed plates (3). A conveyor belt (4) is rotatably connected between the two groups of fixed plates (3). A hammer mechanism (5) is arranged above the conveyor belt (4). A flip mechanism (6) is arranged at the rear end of the hammer mechanism (5). A transfer mechanism (7) is arranged at the rear end of the connecting frame (1). A plurality of support frames (8) are arranged on the surface of the conveyor belt (4). A connecting groove (9) is provided on the inner side of the support frame (8). The lower end of the box body (2) is matched with the connecting groove (9). The hammer mechanism (5) includes a top plate (51). A movable plate (52) is fixedly connected to the rear end of the top plate (51). A rotating block (53) is rotatably connected to the inner side of the movable plate (52).

2. The strength detection device for an access control explosion-proof junction box according to claim 1, characterized in that: The front end of the rotating block (53) is fixedly connected to a fixing rod (54), the front end of the fixing rod (54) is fixedly connected to a first fixing ring (55) and a second fixing ring (56), the inner sides of the first fixing ring (55) and the second fixing ring (56) are both fixedly connected to connecting tubes (57), the two groups of connecting tubes (57) are symmetrical to each other, the lower ends of the connecting tubes (57) are fixedly connected to hammer blocks (58), and the upper end of one of the two groups of hammer blocks (58) is provided with a protrusion (59).

3. The strength detection device for an access control explosion-proof junction box according to claim 2, characterized in that: A protective cover (510) is movably connected to the outer side of the hammer block (58); a slot (511) is provided at the lower end of the protective cover (510); the slot (511) is matched with the branch pipe; a first sliding groove (512) is provided on the outer side of the protective cover (510); a first sliding block (513) is slidably connected to the inner side of the first sliding groove (512); the first sliding block (513) passes through the first sliding groove (512) and is fixedly connected to the hammer block (58).

4. The strength detection device for an access control explosion-proof junction box according to claim 3 is characterized in that: The upper end of the first sliding block (513) is fixedly connected to a blocking rod (514), the upper end of the blocking rod (514) is fixedly connected to a sliding rod (515), the outer side of the sliding rod (515) is movably connected to a connecting block (516), the connecting block (516) is fixedly connected to the outer side of the protective cover (510), and a spring (517) is movably connected between the connecting block (516) and the first sliding block (513), and the spring (517) is wound around the outer side of the blocking rod (514).

5. The strength detection device for an access control explosion-proof junction box according to claim 2, characterized in that: The upper ends of the two groups of fixed plates (3) are commonly fixedly connected to a mounting plate 1 (518), the rear end of the mounting plate 1 (518) is fixedly connected to two groups of partition plates (519), the upper ends of the two groups of partition plates (519) are both fixedly connected to arc blocks (520), and the two groups of arc blocks (520) are symmetrical to each other, the outer sides of the first fixing ring (55) and the second fixing ring (56) are commonly fixedly connected to a limiting plate (521), and the limiting plate (521) is movably connected between the two groups of partition plates (519), and the rear end of one of the two groups of fixed plates (3) is fixedly connected to a support block (522), and a cylinder (523) is installed on the upper end of the support block (522), and the output end of the cylinder (523) is fixedly connected to the top plate (51).

6. The strength detection device for an access control explosion-proof junction box according to claim 1, characterized in that: The flip mechanism (6) comprises a second mounting plate (61), the front end of the second mounting plate (61) is slidably connected to a first rack (62), one side of the first rack (62) is meshed with a first gear (63), the front end of the first gear (63) is fixedly connected to a rotating rod (64), the front end of the rotating rod (64) is fixedly connected to a rotating block (53), the front end of the second mounting plate (61) is provided with a second sliding groove (65), the inner side of the second sliding groove (65) is slidably connected to a second slider (66) ), the front end of the second sliding block (66) is fixedly connected to a moving rod (67), one side of the moving rod (67) is fixedly connected to the first rack (62), the front end of the moving rod (67) is fixedly connected to a stopper 1 (68) and a stopper 2 (69), the outer side of the stopper 2 (69) is movably connected to a first connecting rod (610), the front end of the first connecting rod (610) is fixedly connected to a moving plate (52), and the rear end of the moving plate (52) is fixedly connected to a second connecting rod (611).

7. The strength detection device for an access control explosion-proof junction box according to claim 1, characterized in that: The lower end of the connecting frame (1) is fixedly connected to two groups of sub-plates (10), the outer sides of the sub-plates (10) are movably connected to the main board (11), the lower ends of the two groups of main boards (11) are commonly fixedly connected to a second base (12), the upper end of the second base (12) is mounted with a second electric push rod (13), the output end of the second electric push rod (13) is fixedly connected to the connecting frame (1), the transfer mechanism (7) comprises a first baffle (71) and a second baffle (72), the front ends of the first baffle (71) and the second baffle (72) are commonly fixedly connected to the main board (11), the lower end of the first baffle (71) is fixedly connected to a first base (73), and the front end of the first base (73) is fixedly connected to the second base (12).

8. The strength detection device for access control explosion-proof junction box according to claim 7, characterized in that: The upper end of the base (73) is movably connected to a rotating plate (74), one side of the rotating plate (74) is fixedly connected to a rotating cylinder (75), the rotating cylinder (75) is rotatably connected to a fixed cylinder (76) via a rotating shaft, the outer side of the fixed cylinder (76) is fixedly connected to the base (73), the upper end of the rotating plate (74) is fixedly connected to a first support ear (77), the lower end of the second baffle plate (72) is rotatably connected to a third baffle plate (78), the other side of the third baffle plate (78) is fixedly connected to a second support ear (79), and the rear ends of the second support ear (79) and the first support ear (77) are rotatably connected to an extension rod (710) together.

9. The strength detection device for access control explosion-proof junction box according to claim 8, characterized in that: A collecting trough (711) is fixedly connected to one side of the base (73); an electric push rod (712) is installed at the rear end of the collecting trough (711); a second rack (713) is fixedly connected to the output end of the electric push rod (712); a second gear (714) is meshed at the upper end of the second gear (713); a front end of the second gear (714) is fixedly connected to a rotating drum (75); two groups of rollers (14) are rotatably connected between the two groups of fixed plates (3); the rollers (14) are rotatably connected to the inner side of the conveyor belt (4); a servo motor (15) is installed at the rear end of one of the two groups of fixed plates (3); the output end of the servo motor (15) is fixedly connected to the roller (14); a support plate (16) is fixedly connected between the two groups of fixed plates (3); the support plate (16) is located on the inner side of the conveyor belt (4).

10. A method for testing the strength of an access control explosion-proof junction box, characterized in that: The strength detection device for an access control explosion-proof junction box according to any one of claims 1 to 9 comprises the following steps: S1: placing the box bodies (2) in turn inside the connecting groove (9), starting the servo motor (15) and setting instructions therefor so that it drives the conveyor belt (4) to transport the box bodies (2) to the bottom of the protective cover (510) and then stops moving, and then starting the cylinder (523). The output end of the cylinder (523) drives the top plate (51) to move downward during the recycling process, thereby causing the movable plate (52) to drive the protective cover (510) to move downward at the same time; S2: As the moving plate (52) continues to move downward, when the first gear (63) stops meshing with the first rack (62), the first connecting rod (610) pushes the second stopper (69) to move horizontally to one side with the first rack (62) as the moving plate (52) moves downward, and then the protective cover (510) first contacts the box body (2) and causes the slot (511) to engage with the outer side of the branching tube, and then the hammer block (58) continues to move downward and strikes the box body (2); S3: After the first group of hammer blocks (58) have finished colliding with the box body (2), the cylinder (523) pushes the top plate (51) upwards. During the process, the second connecting rod (611) contacts the stopper block (68) and pushes the stopper block (68) to move back with the first rack (62). Then, the output end of the cylinder (523) continues to retract, causing the top plate (51) to move downwards, and the first gear (63) engages with the first rack (62), prompting the two groups of hammer blocks (58) to flip, causing the group of hammer blocks (58) with the protrusions (59) to flip to the lower side, and then move downwards and collide with the box body (2); S4: After the impact on the box body (2) is completed, the servo motor (15) is started again to transport the box body (2) after inspection, and the next group of box bodies (2) to be inspected are then transported to the bottom of the hammer mechanism (5). Then, the box body (2) after inspection falls into the transfer mechanism (7) under the transportation of the conveyor belt (4) and falls on the rotating plate (74). The electric push rod (712) is started to push the second rack (713) to make it mesh with the second gear (714), so that the rotating plate (74) is turned over, and the box body (2) after inspection is turned over to the collection tank (711).

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