Cable flame retardant property detection device

Abstract

The utility model discloses a cable flame retardant performance detection device, which comprises a box body, rotating mechanisms, a clamping mechanism and a combustion mechanism, a group of opposite side surfaces of the box body are respectively provided with a through hole, the two rotating mechanisms are arranged in the box body at intervals, each rotating mechanism is provided with a central hole, the central holes and the through holes are positioned on the same straight line, and the combustion mechanism is arranged in the box body. The two clamping mechanisms are arranged in the two center holes respectively so that a cable penetrating through the through hole and the center holes can be fixed to the rotating mechanisms, the combustion mechanism is arranged in the box body and located between the two rotating mechanisms, and the flame spraying end of the combustion mechanism faces the cable. According to the utility model, the cable can be synchronously rotated when the rubber sleeve of the cable is combusted, so that the rubber sleeve is uniformly heated, and the technical problem that the cable flame retardant property detection accuracy is influenced as only a single position of the rubber sleeve is combusted by the existing cable flame retardant property detection device is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cable performance detection, and particularly relates to a cable flame retardant performance detection device. Background Art

[0002] A cable is a device for transmitting electric energy or signals, usually composed of several or several groups of wires. During the production and processing of cables, it is necessary to detect the performance of the cables, including the detection of the flame retardant performance of the cables. When detecting the flame retardant performance of the cables, the rubber sleeve of the cable is often burned with a flame. For example, the "cable flame retardant performance detection device" disclosed in the Chinese utility model patent with the authorization announcement number CN208091987U. However, in the above prior art, when burning the cable rubber sleeve with a flame, only a single position of the cable rubber sleeve is burned, resulting in uneven heat distribution at the burning position of the cable rubber sleeve, thus affecting the accuracy of the cable flame retardant performance detection. Content of the Utility Model

[0003] In view of this, the utility model provides a cable flame retardant performance detection device. The detection device can rotate the cable synchronously when burning the rubber sleeve of the cable, so that the rubber sleeve is evenly heated, and solves the technical problem that the existing cable flame retardant performance detection device only burns a single position of the rubber sleeve, which affects the accuracy of the cable flame retardant performance detection.

[0004] To solve the above technical problems, the utility model provides a cable flame retardant performance detection device, including:

[0005] A box body, and a set of opposite side surfaces of the box body respectively have through holes;

[0006] A rotating mechanism, two rotating mechanisms are arranged at intervals inside the box body, the rotating mechanism has a central hole, and the central hole and the through hole are on the same straight line;

[0007] A clamping mechanism, two clamping mechanisms are respectively arranged in the two central holes, so that the cable passing through the through hole and the central hole is fixed on the rotating mechanism;

[0008] A combustion mechanism, the combustion mechanism is arranged inside the box body and between the two rotating mechanisms, and the flame ejection end of the combustion mechanism faces the cable.

[0009] In some embodiments, the rotating mechanism includes a support plate, a bearing, a rotating ring, a toothed ring, a gear, and a first driving member. One end of the support plate is respectively connected to the upper and lower ends outside the bearing, and the other end of the support plate is connected to the inner wall of the box body to fix the bearing. The rotating ring is arranged inside the inner wall of the bearing and is rotatably connected to the inside of the bearing. The toothed ring is sleeved outside the rotating ring. The gear meshes with the toothed ring. The first driving member is installed on the support plate and is in transmission connection with the gear;

[0010] Wherein, the clamping mechanism is fixed on the inner wall of the rotating ring to rotate synchronously with the rotating ring.

[0011] In some embodiments, the rotating mechanism further includes a slider and a second driving member,

[0012] A limiting chute is formed on the bottom wall inside the box body. The second driving member and the slider are arranged in the chute. The second driving member and the slider are in transmission connection. The upper surface of the slider is connected to the bottom of the support plate.

[0013] In some embodiments, the clamping mechanism includes two identical splint assemblies. The two splint assemblies are respectively fixed to the top and bottom of the inner wall of the rotating ring. The clamping ends of the two splint assemblies face each other to clamp the cable.

[0014] In some embodiments, each splint assembly includes a fixed shell, a moving block, a splint, a magnet plate, a spring, and an electromagnet. One end of the fixed shell is fixed to the inner wall of the rotating ring. The moving block is slidably connected to the inner cavity of the fixed shell. The splint is connected to one side of the moving block outside the fixed shell. The magnet plate is connected to one side of the moving block inside the fixed shell. The spring and the electromagnet are sequentially connected to the magnet plate.

[0015] In some embodiments, the splint assembly further includes a rubber pad. The rubber pad is pasted on one side of the splint away from the moving block.

[0016] In some embodiments, the combustion mechanism includes a sleeve, a movable block, a third driving member, a screw rod, and a flame nozzle. One end of the sleeve is fixed to the top of the inner wall of the box body. The movable block is slidably connected to the inside of the sleeve. The flame nozzle is fixed to one end of the movable block outside the sleeve. The screw rod is fixed to one end of the movable block inside the sleeve. The third driving member is fixed to the top of the inner wall of the sleeve, and the third driving member is in transmission connection with the screw rod.

[0017] In some embodiments, a fire extinguishing mechanism is further included. The fire extinguishing mechanism includes a pressure tank, a solenoid valve, a first conduit, a hollow ring, and a support column. The pressure tank is disposed on the top surface outside the box body. The first conduit is connected to the outlet of the pressure tank. The solenoid valve is disposed at one end of the first conduit close to the pressure tank. The other end of the first conduit passes through the outer wall of the box body and is communicated with the inner cavity of the hollow ring. One end of the support column is fixed to the top and bottom of the hollow ring, and the other end of the support column is respectively fixed to the upper and lower inner walls of the box body.

[0018] In some embodiments, the fire extinguishing mechanism further includes nozzles. A plurality of the nozzles are circumferentially and uniformly arranged along the inner wall of the hollow ring, and the nozzles are communicated with the inner cavity of the hollow ring.

[0019] In some embodiments, a smoke collecting mechanism is further included. The smoke collecting mechanism includes a fan, a filter box, a second conduit, and a smoke collecting hood. The fan and the filter box are fixed on the top surface outside the box body and are communicated. One end of the second conduit is communicated with the air inlet of the filter box. The other end of the second conduit passes through the outer wall of the box body and is connected to the smoke collecting hood. The smoke inlet of the smoke collecting hood faces the combustion mechanism.

[0020] Compared with the prior art, when the cable flame retardant performance detection device provided by the present utility model performs the flame retardant performance detection of the cable, the cable is passed through the two through holes of the box body and the central holes of the two clamping mechanisms, and the cable is clamped and fixed by the clamping mechanism. Then, when the rotating mechanism rotates, the cable can be driven to rotate synchronously, and further the rubber sleeve wrapped outside the cable also rotates accordingly. At the same time, the rubber sleeve is burned by the combustion mechanism, so that the burning position of the rubber sleeve is uniformly heated, thereby improving the accuracy of the flame retardant performance detection of the rubber sleeve. Description of the Drawings

[0021] Figure 1 is the overall structural schematic diagram of the cable flame retardant performance detection device of the present utility model;

[0022] Figure 2 is the internal structure diagram of the box body of the present utility model;

[0023] Figure 3 is the structural schematic diagram of the splint assembly of the present utility model;

[0024] Figure 4 is the structural schematic diagram of the combustion mechanism of the present utility model;

[0025] Figure 5 is the structural schematic diagram of the hollow ring of the present utility model.

[0026] The reference numerals are explained as follows:

[0027] 100, box body, 101, through hole, 102, limiting slide, 110, body, 120, box cover, 121, observation window;

[0028] 200, rotating mechanism, 201, center hole, 210, support plate, 220, bearing, 230, rotating ring, 240, gear ring, 250, gear, 260, first driving member, 270, slider, 280, second driving member;

[0029] 300, clamping mechanism, 310, fixed shell, 320, moving block, 330, clamping plate, 340, magnet plate, 350, spring, 360, electromagnet, 370, rubber pad;

[0030] 400, combustion mechanism, 410, sleeve, 420, movable block, 430, third driving member, 440, screw, 450, flame nozzle;

[0031] 500, fire extinguishing mechanism, 510, pressure tank, 520, solenoid valve, 530, first conduit, 540, hollow ring, 550, support, 560, sprinkler;

[0032] 600. Smoke collection mechanism, 610. Fan, 620. Filter box, 630. Second duct, 640. Smoke collection hood, 650. Activated carbon filter panel, 660. Movable panel. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] See also Figures 1-5 As shown, the utility model provides a cable flame retardant performance testing device, including a box body 100, a rotating mechanism 200, a clamping mechanism 300 and a burning mechanism 400, a group of opposite side surfaces of the box body 100 respectively have through holes 101, and the through holes 101 are preferably strip-shaped holes; the two rotating mechanisms 200 are arranged at intervals inside the box body 100, and the rotating mechanism 200 has a center hole 201, and the center hole 201 and the through hole 101 are located on the same straight line to facilitate smooth passage of the cable; the two clamping mechanisms 300 are respectively arranged in the two center holes 201, and the cable is fixed in the center hole 201 of the rotating mechanism 200 through the clamping mechanism 300, so that when the rotating mechanism 200 rotates, it can drive the cable to rotate synchronously; the burning mechanism 400 is arranged inside the box body 100 and is located between the two rotating mechanisms 200, and the flame ejection end of the burning mechanism 400 is facing the cable.

[0035] When the cable flame retardant performance testing device provided by the present invention is used, the rubber sleeve of the cable is passed through the through holes 101 on both sides of the box body 100 and through the central hole 201 of the rotating mechanism 200, and then the rubber sleeve is clamped and positioned by the clamping mechanism 300, and then the rubber sleeve is sprayed with flame by the burning mechanism 400 to burn, thereby performing a flame retardant test; during the combustion process of the rubber sleeve, since the cable (that is, the rubber sleeve) is fixed to the rotating mechanism 200, when the rotating mechanism 200 rotates, it can drive the rubber sleeve to rotate together, thereby causing the cable to rotate, and the flame can burn evenly at different positions along the burning position in a ring shape, thereby improving the accuracy of the cable flame retardant performance test.

[0036] In one embodiment, the box body 100 includes a main body 110 and a box cover 120. The box cover 120 is detachably fixed to the opening of the main body 110 so as to be opened for inspection and maintenance of the components inside the box body 100. An observation window 121 is provided in the middle of the box cover 120 to facilitate observation of the situation inside the main body 110.

[0037] In one embodiment, the rotating mechanism 200 includes a support plate 210, a bearing 220, a rotating ring 230, a gear ring 240, a gear 250 and a first driving member 260. One end of the support plate 210 is respectively connected to the upper and lower ends of the outside of the bearing 220, and the other end of the support plate 210 is connected to the inner wall of the box 100 to fix the bearing 220. The rotating ring 230 is arranged in the inner wall of the bearing 220 and is rotatably connected to the inside of the bearing 220. The gear ring 240 is sleeved on the outside of the rotating ring 230. The gear 250 is engaged with the gear ring 240. The first driving member 260 is installed on the support plate 210 and is transmission-connected to the gear 250. The clamping mechanism 300 is fixed to the inner wall of the rotating ring 230.

[0038] In this embodiment, the first driving member 260 is turned on, driving the gear 250 to rotate, and then driving the gear ring 240 to rotate, thereby driving the rotating ring 230 to rotate in the inner wall of the bearing 220. Since the cable is fixed in the rotating ring 230 by the clamping mechanism 300, the cable can rotate by the rotation of the rotating ring 230, thereby achieving uniform combustion of the rubber sleeve.

[0039] In one embodiment, Figure 2 As shown, the rotating mechanism 200 also includes a slider 270 and a second driving member 280. Accordingly, a limiting slide groove 102 is formed on the bottom wall inside the box body 100. The second driving member 280 and the slider 270 are arranged in the limiting slide groove 102. The second driving member 280 and the slider 270 are transmission-connected, and the upper surface of the slider 270 is connected to the bottom of the support plate 210.

[0040] In this embodiment, the second driving member 280 is started to drive the slider 270 to move in the limiting chute 102, and further drive the support plate 210 to move, that is, to change the distance between the two rotating mechanisms 200, so as to realize the tensioning of the cable rubber sleeve.

[0041] Further, the first driving member 260 is a servo motor, and the second driving member 280 is an electric push rod.

[0042] In one embodiment, as Figure 3 shown, the clamping mechanism 300 includes two identical clamping plate assemblies, and the two clamping plate assemblies are respectively fixed to the top and bottom of the inner wall of the rotating ring 230, and the clamping ends of the two clamping plate assemblies face each other to clamp the cable.

[0043] Further, the clamping plate assembly includes a fixed shell 310, a moving block 320, a clamping plate 330, a magnet plate 340, a spring 350 and an electromagnet 360. One end of the fixed shell 310 is fixed to the inner wall of the rotating ring 230. The moving block 320 is slidably connected to the inner cavity of the fixed shell 310. The clamping plate 330 is connected to one side of the moving block 320 outside the fixed shell 310. The magnet plate 340 is connected to one side of the moving block 320 inside the fixed shell 310. The spring 350 and the electromagnet 360 are sequentially connected to the magnet plate 340.

[0044] In this embodiment, the electromagnet 360 is powered on, so as to generate a thrust on the magnet plate 340, so that the moving block 320 moves outward, so that the clamping plate 330 moves, so that the rubber sleeve can be clamped and fixed by two symmetrical clamping plates 330.

[0045] In one embodiment, the clamping plate assembly further includes a rubber pad 370, and the rubber pad 370 is pasted on one side surface of the clamping plate 330 away from the moving block 320. The setting of the rubber pad 370 can prevent sliding when clamping the rubber sleeve.

[0046] In one embodiment, as Figure 4As shown in the figure, the combustion mechanism 400 includes a sleeve 410, a movable block 420, a third driving member 430, a screw 440, and a flame nozzle 450. One end of the sleeve 410 is fixed to the top of the inner wall of the box body 100. The movable block 420 is slidably connected to the inside of the sleeve 410. The flame nozzle 450 is fixed to one end of the movable block 420 outside the sleeve 410. The screw 440 is fixed to one end of the movable block 420 inside the sleeve 410. The third driving member 430 is fixed to the top of the inner wall of the sleeve 410, and the third driving member 430 is in transmission connection with the screw 440.

[0047] In this embodiment, an angle sensor is further provided on the first driving member 260, and a controller is provided on one side of the box body 100. The angle sensor is electrically connected to the controller. When the flame nozzle 450 sprays flames to burn the rubber sleeve during combustion, first, the rubber sleeve will be flat and close to a horizontal state after being clamped. In addition, the flame nozzle 450 is arranged perpendicular to the horizontal plane. When the rubber sleeve rotates 90 degrees along with the rotating ring 230, at this time, the flame nozzle 450 is aligned with the side of the flat rubber sleeve. When the angle value fed back by the angle sensor to the controller is 90 degrees, the third driving member 430 is started to drive the screw 440 to rotate, thereby driving the movable block 420 to move, and then driving the flame nozzle 450 to retract in the sleeve 410 to adjust the position, so that the distance between the flame nozzle 450 and the side of the flat rubber sleeve is approximately the same as the distance perpendicular to the horizontal plane, thereby ensuring that the distance between the flame and the rubber sleeve is approximately the same during the rotation of the rubber sleeve, and further ensuring the accuracy of the flame retardant performance test.

[0048] In one of the embodiments, a fire extinguishing mechanism 500 is further included. As shown in combination Figure 5 As shown in the figure, the fire extinguishing mechanism 500 includes a pressure tank 510, a solenoid valve 520, a first conduit 530, a hollow ring 540, and a support column 550. The pressure tank 510 is arranged on the top surface outside the box body 100. The first conduit 530 is connected to the outlet of the pressure tank 510. The solenoid valve 520 is arranged at one end of the first conduit 530 close to the pressure tank 510. The other end of the first conduit 530 passes through the outer wall of the box body 100 and is communicated with the inner cavity of the hollow ring 540. One end of the support column 550 is fixed to the top and bottom of the hollow ring 540, and the other end of the support column 550 is respectively fixed to the upper and lower inner walls of the box body 100.

[0049] Further, the fire extinguishing mechanism 500 further includes a spray head 560. A plurality of the spray heads 560 are uniformly arranged circumferentially along the inner wall of the hollow ring 540, and the spray head 560 is communicated with the inner cavity of the hollow ring 540.

[0050] In this embodiment, during actual use, after the rubber sleeve burns out, the solenoid valve 520 is opened so that the fire extinguishing agent in the pressure tank 510 can enter the first conduit 530, and then enter the inner cavity of the hollow ring 540, and then the fire extinguishing agent can be ejected along the nozzle 560, so as to extinguish the fire on the broken rubber sleeve, and avoid the fire from growing and thus avoid dangerous situations.

[0051] In one of the embodiments, a smoke collecting mechanism 600 is further included. The smoke collecting mechanism 600 includes a fan 610, a filter box 620, a second conduit 630 and a smoke collecting hood 640. The fan 610 and the filter box 620 are fixed on the top surface outside the box body 100 and are connected. One end of the second conduit 630 is connected to the air inlet of the filter box 620, the other end of the second conduit 630 passes through the outer wall of the box body 100 and is connected to the smoke collecting hood 640. The smoke inlet of the smoke collecting hood 640 faces the combustion mechanism 400, and an activated carbon filter plate 650 is arranged in the filter box 620. After the fire extinguishing is completed, starting the fan 610 can make the filter box 620 generate negative pressure, so that the harmful smoke and gas generated can be sucked into the filter box 620 through the smoke collecting hood 640 for filtration, thus avoiding the smoke from spreading into the surrounding air and causing pollution, and at the same time avoiding harm to the surrounding staff.

[0052] Further, a movable plate 660 is detachably fixed to one side wall of the filter box 620. The arrangement of the movable plate 660 enables the filter box 620 to be disassembled, so as to facilitate the cleaning and replacement of the activated carbon filter plate 650.

[0053] In one of the embodiments, a tension sensor is further arranged on the second driving member 280. A controller is arranged on one side wall of the box body 100. The signal output end of the tension sensor is connected to the signal input end of the controller, and the signal input end of the controller is connected to the signal input end of the solenoid valve 520. After clamping the rubber sleeve, the second driving member 280 pulls the tension sensor, and then pulls the slider 270 to move, so as to realize the tensioning of the rubber sleeve. When the tension value feedback by the tension sensor returns to zero after breakage, the controller will automatically start the solenoid valve 520 at this time, so as to realize automatic fire extinguishing.

[0054] The working principle of the cable flame retardant performance detection device provided by the present utility model is as follows:

[0055] During use, the rubber sleeve of the cable penetrates through the through holes 101 on both sides of the box body 100, and the rubber sleeve penetrates through the rotating ring 230 and the hollow ring 540. Then, the clamping mechanism 300 is used to clamp and position the rubber sleeve. Then, the combustion mechanism 400 is used to spray flames to burn the rubber sleeve, so as to conduct a flame retardant test. During the burning process, starting the first driving member 260 can drive the gear 250 to rotate, thereby driving the toothed ring 240 to rotate, and further enabling the rotating ring 230 to rotate, so that the rubber sleeve rotates automatically, and the flame burns evenly at different positions in a circular shape along the burning area, thereby improving the accuracy of the flame retardant test; when burning, the flame nozzle 450 will spray flames to burn the rubber sleeve. First, after the rubber sleeve is clamped, it will be flat and in a state close to parallel to the horizontal plane. In addition, the flame nozzle 450 is arranged perpendicular to the horizontal plane. When the rubber sleeve rotates 90 degrees, at this time, the flame nozzle 450 is aligned with the side of the flat rubber sleeve. When the angle value fed back by the angle sensor to the controller is 90 degrees, the third driving member 430 will be started to drive the screw rod 440 to rotate, thereby driving the movable block 420 to move, and further driving the flame nozzle 450 to adjust its position, so as to ensure that the distance between the flame and the rubber sleeve is approximately the same during the rotation of the rubber sleeve, and further ensure the accuracy of the flame retardant performance test; after clamping the rubber sleeve, the second driving member 280 pulls the tension sensor, thereby pulling the slider 270 to move, so as to realize the tensioning of the rubber sleeve. When it breaks, the tension value fed back by the tension sensor returns to zero. At this time, the controller will automatically start the solenoid valve 520, so that the fire extinguishing agent in the pressure tank 510 can enter the first conduit 530, and then enter the inner cavity of the hollow ring 540, so that it can spray the fire extinguishing agent along the nozzle 560, so as to realize the fire extinguishing of the broken rubber sleeve, avoid the fire from getting bigger and further avoid dangerous situations. After the fire extinguishing is completed, starting the fan 610 can make the filter box 620 generate negative pressure, so that the smoke and harmful gases generated can be sucked away by the smoke hood 640 and enter the filter box 620 for filtering, so as to avoid the smoke from spreading into the surrounding air and causing pollution, and at the same time avoid harming the surrounding staff.

[0056] In summary, compared with the prior art, using the cable flame retardant performance detection device provided by the present utility model to detect the cable flame retardant performance has the following advantages:

[0057] 1. The clamping mechanism 300 of the present utility model can clamp and fix the rubber sleeve of the cable, and form a certain tension on the rubber sleeve. Then, the combustion mechanism 400 is used to spray flames to burn the rubber sleeve. During the burning process, the rotating mechanism 200 can drive the cable to rotate automatically, so that the burning position of the rubber sleeve is evenly heated, thereby improving the accuracy of the detection of the flame retardant performance of the rubber sleeve;

[0058] 2. During the rotation of the pinched rubber sleeve, when it rotates to the side wall surface of the flattened rubber sleeve and rotates 90 degrees at this time, the angle sensor will feedback a signal to the controller, so that the controller will start the third driving member 430 to drive the screw 440 to rotate, thereby driving the movable block 420 to move back, so as to adjust the distance between the flame nozzle and the side of the rubber sleeve, so that the flame distance and different positions of the outer wall of the rubber sleeve always maintain the same distance, thereby further improving the accuracy of the flame retardant performance detection;

[0059] 3. When a certain tension is formed by pulling the rubber sleeve, the tension sensor will feedback a certain tension value to the controller. After the combustion breaks, the tension disappears, and the value feedback by the tension sensor returns to zero at this time. At this time, the controller will open the solenoid valve 520, so that the fire extinguishing agent in the pressure tank 510 enters the hollow ring 540, and then uses the nozzle 560 to extinguish the burning rubber sleeve that continues to burn after breaking, avoiding the spread of fire and danger;

[0060] 4. The fan 610 can make the filter box 620 generate negative pressure, so that after the fire is extinguished, the smoke hood 640 can extract the smoke and toxic gases and introduce them into the filter box 620 for filtration by the activated carbon filter plate 650, so as to avoid harmful gases from entering the air and polluting the surrounding air, and at the same time avoid harm to the surrounding staff.

[0061] The specific embodiments of the present invention described above do not constitute a limitation to the protection scope of the present invention. Any other corresponding changes and deformations made according to the technical concept of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A cable flame retardant performance detection device, characterized in that: include: A box body, wherein a set of opposite side surfaces of the box body respectively have through holes; A rotating mechanism, wherein two rotating mechanisms are spaced apart and arranged inside the box body, each rotating mechanism having a center hole, and the center hole and the through hole are located on the same straight line; A clamping mechanism, wherein the two clamping mechanisms are respectively arranged in the two center holes so that the cable passing through the through hole and the center hole is fixed on the rotating mechanism; The combustion mechanism is arranged inside the box and located between the two rotating mechanisms, and the flame ejection end of the combustion mechanism is directed toward the cable.

2. The cable flame retardant performance detection device according to claim 1, characterized in that: The rotating mechanism includes a support plate, a bearing, a rotating ring, a gear ring, a gear and a first driving member, one end of the support plate is respectively connected to the upper and lower ends of the outer side of the bearing, the other end of the support plate is connected to the inner wall of the box to fix the bearing, the rotating ring is arranged in the inner wall of the bearing and is rotatably connected to the inner side of the bearing, the gear ring is sleeved on the outer side of the rotating ring, the gear is meshed with the gear ring, and the first driving member is mounted on the support plate and is transmission-connected to the gear; Wherein, the clamping mechanism is fixed on the inner wall of the rotating ring so as to rotate synchronously with the rotating ring.

3. The cable flame retardant performance detection device according to claim 2, characterized in that: The rotating mechanism further includes a slider and a second driving member. A limited sliding groove is formed on the bottom wall inside the box body, and the second driving member and the slider are arranged in the sliding groove. The second driving member and the slider are transmission-connected, and the upper surface of the slider is connected to the bottom of the support plate.

4. The cable flame retardant performance detection device according to claim 3, characterized in that: The clamping mechanism includes two clamping plate assemblies with the same structure. The two clamping plate assemblies are respectively fixed to the top and bottom of the inner wall of the rotating ring. The clamping ends of the two clamping plate assemblies are opposite to each other to clamp the cable.

5. The cable flame retardant performance detection device according to claim 4, characterized in that: Each of the splint assemblies includes a fixed shell, a moving block, a splint, a magnet plate, a spring and an electromagnet. One end of the fixed shell is fixed to the inner wall of the rotating ring, the moving block is slidably connected to the inner cavity of the fixed shell, the splint is connected to the side of the moving block located outside the fixed shell, the magnet plate is connected to the side of the moving block located inside the fixed shell, and the spring and electromagnet are connected to the magnet plate in turn.

6. The cable flame retardant performance detection device according to claim 5, characterized in that: The clamping plate assembly further comprises a rubber pad which is adhered to a side surface of the clamping plate away from the moving block.

7. The cable flame retardant performance detection device according to claim 1, characterized in that: The combustion mechanism includes a sleeve, a movable block, a third driving member, a screw and a flame nozzle, one end of the sleeve is fixed to the top of the inner wall of the box, the movable block is slidably connected to the inside of the sleeve, the flame nozzle is fixed to the end of the movable block located outside the sleeve, the screw is fixed to the end of the movable block located inside the sleeve, the third driving member is fixed to the top of the inner wall of the sleeve, and the third driving member is transmission connected to the screw.

8. The cable flame retardant performance detection device according to claim 1, characterized in that: It also includes a fire extinguishing mechanism, which includes a pressure tank, a solenoid valve, a first conduit, a hollow ring and a support. The pressure tank is arranged on the top surface outside the box body, the first conduit is connected to the outlet of the pressure tank, the solenoid valve is arranged at one end of the first conduit close to the pressure tank, the other end of the first conduit passes through the outer wall of the box body and is connected to the inner cavity of the hollow ring, one end of the support is fixed to the top and bottom of the hollow ring, and the other end of the support is respectively fixed to the upper and lower inner walls of the box body.

9. The cable flame retardant performance detection device according to claim 8, characterized in that: The fire extinguishing mechanism further includes a nozzle, a plurality of which are evenly arranged along the circumference of the inner wall of the hollow ring, and the nozzles are communicated with the inner cavity of the hollow ring.

10. The cable flame retardant performance detection device according to claim 1, characterized in that: It also includes a smoke collection mechanism, which includes a fan, a filter box, a second duct and a smoke collection hood. The fan and the filter box are fixed on the top surface outside the box and are connected. One end of the second duct is connected to the air inlet of the filter box, and the other end of the second duct is arranged through the outer wall of the box and is connected to the smoke collection hood. The smoke inlet of the smoke collection hood faces the combustion mechanism.

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