Wire and cable flame-retardant and fire-resistant experimental equipment and experimental method thereof

Abstract

The invention relates to the technical field of electric wires and cables, in particular to electric wire and cable flame-retardant and fire-resistant experimental equipment and an experimental method thereof. A blast burner is mounted in the test box; an extension part is arranged at the bottom of the test box; the device further comprises a sliding rail, a first sliding plate, a connecting rod, a bolt, a connecting plate and the like. A slide rail is mounted at the bottom in the test box; a first sliding plate is slidably connected to the sliding rail. The first sliding plate is rotationally connected with a plurality of connecting rods. The right side of the sliding plate I is slidably connected with a bolt; a slot is formed in the right side of the right connecting rod, and the bolt and the slot are aligned and embedded with each other; a first sliding groove is formed in each connecting rod. And a plurality of connecting plates are jointly connected among all the connecting rods. The upper end and the lower end of a to-be-detected cable are manually inserted into the gaps between the two adjacent clamping plates on the front side and the rear side respectively, the rightmost clamping plate is manually pushed to move leftwards, the whole rhombic telescopic frame is contracted at the same time, all the clamping plates are attached to each other, and the cable is clamped.

Description

Technical Field

[0001] The present invention relates to the technical field of wires and cables, and in particular to flame retardant and fire resistant testing equipment and a testing method for wires and cables. Background Art

[0002] In the existing cable bundle combustion test, all the cables to be tested are manually placed on the surface of the placement rack, and then each cable is tied to the placement rack with wire, and then the excess wire is cut off. The steps are relatively cumbersome. In addition, since the national standard carbonization length is 2.5 meters, and the cable to be tested must be at least 2.5 meters long, more knots need to be tied when the cables are manually bundled, which affects the detection efficiency. Summary of the invention

[0003] In order to overcome the disadvantage that more knots need to be bundled when manually bundling cables, which affects the detection efficiency, the present invention provides a flame retardant and fire-resistant test equipment and a test method for wires and cables.

[0004] The technical solution is: a flame retardant and fire resistant test equipment for wires and cables, including a test box and a blowtorch; a blowtorch is installed in the test box, and an extension is arranged at the bottom of the test box; it also includes a slide rail, a slide plate 1, a connecting rod, a latch, a connecting plate, a slide plate 2, a splint, a fastener, a support rod, a diamond-shaped telescopic frame and a pull rod; a slide rail is installed at the bottom of the test box; a slide plate 1 is slidably connected to the slide rail; a plurality of connecting rods are rotatably connected to the slide plate 1; a latch is slidably connected to the right side of the slide plate 1; a slot is provided on the right side of the right connecting rod, and the latch and the slot are aligned and interlocked with each other; a slide groove 1 is provided on each connecting rod; a plurality of connecting plates are connected to all the connecting rods, the upper connecting plate slides in the corresponding slide groove 1, and the lower connecting plate is fixedly connected to the corresponding connecting rod; the connecting plate on the right A pulling rod is fixedly connected to the connecting plate; a sliding plate 2 is slidably connected to the right part of each connecting plate; each sliding plate 2 is fixedly connected to a splint, and another splint is fixedly connected to the left part of each connecting plate; each connecting plate is rotatably connected to a fastener; a number of supporting rods are fixedly connected to the left side of the rightmost splint, and all the supporting rods on each rightmost splint are slidably connected to a number of splints, a sliding groove 2 is opened on the front side of each splint, all the supporting rods form a U-shaped gap with the corresponding splint, and each splint located on the leftmost side is fixedly connected to the corresponding connecting plate; each connecting plate is slidably connected to a rhombus telescopic frame, and each rhombus telescopic frame is rotatably connected to each other through a number of rotating shafts, and the rotating shafts of all the rhombus telescopic frames are slidably connected to the sliding groove 2 on the corresponding splint.

[0005] Furthermore, it also includes supporting feet; a slot is provided on the front side and the rear side of the upper part of each connecting rod, and a supporting foot is rotatably connected in each slot.

[0006] Furthermore, each support leg is provided with a second inclined surface facing the slot on one side away from the rotating portion.

[0007] Furthermore, it also includes a rocker and a slider; the right side surface of the upper part of the right connecting rod is rotatably connected to the rocker, and the surface of the rocker is provided with threads; the right side of the connecting plate located above is fixed with a slider, and the rocker is rotatably connected to the slider.

[0008] Furthermore, the joystick grip is roughly set.

[0009] Furthermore, a suction frame and an air pump are provided; a plurality of air inlet slots are provided on the front side of the test box; a suction frame is fixedly connected to the upper part of the test box, and the suction frame is connected to the inside of the test box, and an activated carbon adsorption layer is provided on the suction frame.

[0010] Furthermore, it also includes scrapers and springs; the opposite surfaces of all adjacent splints are slidably connected to a scraper, each scraper is provided with a slope three, and the tip of the slope three is flush with the rear surface of the support rod; the opposite surfaces of all adjacent splints are fixedly connected to a plurality of springs, and all the springs on one side of each splint are fixedly connected to the corresponding scraper.

[0011] Furthermore, a collecting trough is provided on the first slide plate, and all the clamping plates are located directly above the collecting trough.

[0012] Furthermore, it also includes a reel, a baffle and a pull rope; a plurality of air inlets are opened on the upper front side and the upper rear side of the test box, and all the air inlets are connected to the test box; a reel is fixedly connected to the front side and the rear side of the test box; a baffle is rolled up in each reel; and a plurality of pull ropes are connected to the bottom of each reel.

[0013] A test method for flame retardant and fire resistant test equipment for wires and cables, comprising the following steps: Step 1: First, manually open the switch door of the test box, then manually pull the pull rod to move to the right, the pull rod pulls the connecting rod, and the connecting rod drives another connecting rod and slide plate one to move synchronously to the right along the slide rail through the connecting plate until slide plate one stops when it is completely moved to the extension part; Step 2: Manually hold the connecting rod on the right with one hand, and pull the pin out of the slot with the other hand, and then rotate the connecting rod counterclockwise 180 degrees based on the reference from right to left, so that the two connecting rods in the vertical state are rotated into a horizontal state, so as to facilitate manual installation of the cable; Step 3: Manually insert the upper ends of the cables to be tested into the gaps between the two adjacent clamping plates on the front side, and insert the lower ends of the cables to be tested into the gaps between the two adjacent clamping plates on the rear side, respectively. The upper and lower ends of the cables correspond to each other in the gap between the two adjacent clamping plates on the side; Step 4: Manually push the rightmost clamping plate to move to the left, and at the same time, the rightmost clamping plate pushes the rotating shaft on the diamond-shaped telescopic frame in contact with it to move synchronously, so that the diamond-shaped telescopic frame contracts, and the remaining clamping plates are pushed closer to each other while the diamond-shaped telescopic frame contracts, so that all the cables are clamped at the same time; Step 5: Manually rotate the connecting rod clockwise ninety degrees around the rotating part on the slide plate one as viewed from right to left, so that the connecting rod is changed from a horizontal state to a vertical state, and then manually insert the pin into the slot to lock the connecting rod; Step 6: Then manually push the connecting rod to the left through the pull rod, so that all the cables are facing the nozzle of the blowtorch, and then start the blowtorch to burn the cables.

[0014] The present invention has the following advantages: the present invention manually inserts the upper end and the lower end of the cable to be detected into the gap between the two adjacent clamping plates on the front and rear sides respectively, and manually pushes the rightmost clamping plate to move to the left, so that the diamond-shaped telescopic frame is contracted as a whole at the same time, so that all the clamping plates are fitted together to clamp the cable.

[0015] The present invention manually rotates the rocker to make the slider move forward along the thread on the rocker, and then the slider drives the front connecting plate, the second slide plate and the clamping plate to move synchronously along the first slide groove, so that the upper end of the cable clamped by the front clamping plate and the lower end of the cable clamped by the rear clamping plate pull each other, so that the cable is straightened.

[0016] The present invention manually pulls the pull rope on the right side of the reel so that the reel reels the baffle plate, so that the baffle plate no longer blocks the air inlet, thereby increasing the amount of external cold air entering the test box. At the same time, the air pump is started to suck the hot air in the test box through the suction frame, so that the hot air in the test box is discharged, and the external cold air enters the test box for cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure disclosed by the flame retardant and fire resistant testing equipment for wires and cables of the present invention;

[0018] Figure 2 A structural cross-sectional view of a test box disclosed by the flame retardant and fire resistant test equipment for wires and cables of the present invention;

[0019] Figure 3 It is a schematic structural diagram of a collecting trough on a slide plate, a slot on a connecting rod and a latch disclosed in the flame retardant and fire resistant test equipment for electric wires and cables of the present invention;

[0020] Figure 4 It is a schematic structural diagram of the connecting plate, the second slide plate, the clamping plate, the fastener, the support rod and the diamond-shaped telescopic frame disclosed in the flame retardant and fire-resistant test equipment for wires and cables of the present invention;

[0021] Figure 5 It is a schematic diagram of the structure of the scraper and spring disclosed in the flame retardant and fire resistant test equipment for wires and cables of the present invention;

[0022] Figure 6 It is a structural schematic diagram of the support legs, rocker and slider disclosed in the flame retardant and fire resistant test equipment for wires and cables of the present invention;

[0023] Figure 7 The present invention is a working state diagram of the slide plate 1, the connecting rod and the supporting legs disclosed in the flame retardant and fire resistant testing equipment for wires and cables.

[0024] The names and serial numbers of the parts in the figure are: 1-test box, 2-slide rail, 3-slide plate 1, 4-connecting rod, 5-latch, 6-connecting plate, 7-slide plate 2, 8-plywood, 9-fastener, 10-support rod, 11-diamond telescopic frame, 12-blowtorch, 13-suction frame, 14-air pump, 15-support foot, 16-rocker, 17-slider, 18-scraper, 19-spring, 1001-extension part, 1002-air inlet groove, 111-inclined surface 1, 222-pull rod, 50-winder, 51-blocking piece, 52-pull rope, 311-collecting groove, 4001-slot, 4002-slide groove 1, 8001-slide groove 2, 1501-card slot, 1502-inclined surface 2, 181-pressing part, 1801-inclined surface 3. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with specific embodiments. It should also be noted that, unless otherwise clearly specified and limited, terms such as: setting, installing, connecting, and connecting should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Example 1

[0027] A flame retardant and fire resistant test equipment for wires and cables, such as Figure 1-Figure 7 As shown, it includes a test box 1 and a blowtorch 12; the blowtorch 12 is installed in the test box 1, and an extension portion 1001 is provided at the bottom of the test box 1;

[0028] It also includes a slide rail 2, a slide plate 3, a connecting rod 4, a latch 5, a connecting plate 6, a slide plate 2 7, a splint 8, a fastener 9, a support rod 10, a diamond telescopic frame 11 and a pull rod 222; a slide rail 2 is installed at the bottom of the test box 1; a slide plate 3 is slidably connected to the slide rail 2; two connecting rods 4 are rotatably connected to the slide plate 3; a latch 5 is slidably connected to the right side of the slide plate 3; a slot 4001 is provided on the right side of the right connecting rod 4, and the latch 5 and the slot 4001 are aligned and engaged with each other; a slide groove 4002 is provided on each connecting rod 4; two connecting plates 6 distributed up and down are commonly connected between all the connecting rods 4, the upper connecting plate 6 slides in the corresponding slide groove 4002, and the lower connecting plate 6 is fixedly connected to the corresponding connecting rod 4; a pull rod 222 is fixedly connected to the connecting plate 6 on the right; each connecting plate 6 is slidably connected to a slide plate 2 on the right 7; each slide plate 2 7 is fixedly connected to a clamping plate 8, and the left part of each connecting plate 6 is fixedly connected to another clamping plate 8; each connecting plate 6 has a part that is rotatably connected to a fastener 9, and the corresponding slide plate 2 7 is locked or loosened by manually twisting the fastener 9; two support rods 10 are fixedly connected to the left side of the clamping plate 8 located on the far right, and all the support rods 10 on each rightmost clamping plate 8 are slidably connected to a plurality of clamping plates 8, and a slide groove 2 8001 is opened on the front side of each clamping plate 8, all the support rods 10 form a U-shaped gap with the corresponding clamping plate 8, and each clamping plate 8 located on the far left is fixedly connected to the corresponding connecting plate 6; each connecting plate 6 is slidably connected to a rhombus telescopic frame 11, and each rhombus telescopic frame 11 is rotatably connected to each other through a plurality of rotating shafts, and the rotating shafts of all the rhombus telescopic frames 11 are slidably connected to the slide groove 2 8001 on the corresponding clamping plate 8.

[0029] It also includes a support leg 15; a slot 1501 is provided on the front and rear sides of the upper portion of each connecting rod 4, and a support leg 15 is rotatably connected in each slot 1501.

[0030] A slope 111 is provided on one side of each slot 1501 away from the rotating portion of the support leg 15 to facilitate manual insertion of a finger into the slot 1501 .

[0031] A second inclined surface 1502 facing the slot 1501 is disposed on a side of each support leg 15 away from the rotating portion. Compared with a straight surface, the second inclined surface 1502 makes it easier to manually flip the support leg 15 .

[0032] It also includes a rocker 16 and a slider 17; the right side surface of the upper part of the right connecting rod 4 is rotatably connected to the rocker 16, and the surface of the rocker 16 is provided with a thread; the right side of the connecting plate 6 located above is fixedly connected to the slider 17, and the rocker 16 is rotatably connected to the slider 17, and the slider 17 is controlled to move up and down by manually shaking the rocker 16.

[0033] The grip of the rocker 16 is roughly designed to prevent the hand from slipping against the rocker 16 when the rocker 16 is manually rotated, thereby affecting the work efficiency.

[0034] A suction frame 13 and an air pump 14; three air inlet slots 1002 are provided on the front side of the test box 1; the upper portion of the test box 1 is bolted with a suction frame 13, and the suction frame 13 is connected to the interior of the test box 1, and the suction frame 13 is provided with an activated carbon adsorption layer, through which the toxic gas generated by the burning cable is adsorbed to prevent the harmful gas from diffusing into the air and causing problems of affecting health after being inhaled by the human body; the upper portion of the suction frame 13 is fixedly connected to and connected with an air pump 14.

[0035] It also includes a scraper 18 and a spring 19; the opposing surfaces of all two adjacent splints 8 are slidably connected to a scraper 18, each scraper 18 is provided with a slope three 1801, and the tip of the slope three 1801 is flush with the rear surface of the support rod 10; the opposing surfaces of all two adjacent splints 8 are fixedly connected to two springs 19, and all the springs 19 on one side of each splint 8 are fixedly connected to the corresponding scraper 18.

[0036] A collecting groove 311 is provided on the slide plate 3, and all the clamping plates 8 are located directly above the collecting groove 311. When the burning cable drops carbonized impurities, the falling carbonized impurities are collected by the collecting groove 311 to prevent the carbonized impurities from falling into the test box 1 and increasing the workload of subsequent cleaning.

[0037] Here is how the above example works:

[0038] In the existing bundle combustion test of cables, all the cables to be tested are manually placed on the surface of the placement rack, and then each cable is tied to the placement rack with wire, and then the excess wire is cut off. The steps are relatively cumbersome. Since the national standard carbonization length is 2.5 meters, and the cable to be tested needs to be at least 2.5 meters, more knots need to be tied when the cables are manually tied, which affects the detection efficiency. Therefore, the switch door of the test box 1 is manually opened, and then the pull rod 222 is manually pulled to the right. The pull rod 222 pulls the connecting rod 4, and the connecting rod 4 drives another connecting rod 4 and the slide plate 3 to move synchronously to the right along the slide rail 2 through the connecting plate 6 until the slide plate 3 stops when it is completely moved to the extension part 1001. At this time, the person holds the right connecting rod 4 with one hand and pulls the pin 5 out of the slot 4001 with the other hand. Then the connecting rod 4 is rotated 180 degrees counterclockwise from right to left, so that the two connecting rods 4 in the vertical state are rotated to a horizontal state, so as to facilitate manual installation of the cable. Figure 7 As shown, the following are Figure 7 For the reference direction description, the clamping plate 8 is facing upwards. At this time, the U-shaped gap between the two adjacent clamping plates 8 is the largest. Then, the upper ends of the cables to be tested are manually inserted into the gaps between the two adjacent clamping plates 8 on the front side, and the lower ends of the cables to be tested are manually inserted into the gaps between the two adjacent clamping plates 8 on the rear side. The upper and lower ends of the cables correspond one to one. When all the cables are placed in the U-shaped gaps between the two clamping plates 8, the rightmost clamping plate 8 is manually pushed to move to the left. At the same time, the rightmost clamping plate 8 pushes the rotating shaft on the diamond telescopic frame 11 in contact with it to move synchronously, so that the diamond telescopic frame 11 is contracted as a whole at the same time. The diamond telescopic frame 11 contracts while pushing the remaining The clamping plates 8 are brought close to each other, thereby clamping all the cables at the same time, and then the fastener 9 is manually twisted with a wrench so that the fastener 9 supports the slide plate 2 7, thereby locking the slide plate 2 7. In this way, only the cable to be tested needs to be quickly placed in the U-shaped gap by the human hand, and the clamping plate 8 on the far right is pushed to move to the left, so that all the cables can be quickly clamped at the same time, which greatly saves the detection time and improves the detection efficiency. At the same time, when the two connecting rods 4 in the vertical state are manually rotated to the horizontal state, the human finger is inserted into the card slot 1501 along the inclined surface 111, and then the finger presses the inclined surface 2 1502 to turn the two legs 15 facing downward counterclockwise by 90 degrees. Figure 7 As shown, the two legs 15 support the ground, so that the connecting rod 4 is in a horizontal state, so as to facilitate manual installation of the cable.

[0039] Taking into account that, due to the deformable nature of the cable itself, the cable is not completely straight, but partially bent, resulting in inconsistent burning position and length of each cable to be detected, affecting the detection data. Therefore, after the cables to be detected are clamped by the clamp 8, the rocker 16 is manually rotated to make the slider 17 move forward along the thread on the rocker 16, and then the slider 17 drives the front connecting plate 6, the slide plate 2 7 and the clamp 8 to move synchronously along the slide groove 1 4002, so that the upper end of the cable clamped by the front clamp 8 moves forward synchronously, while the lower end of the cable clamped by the rear clamp 8 does not move, so that the upper end and the lower end of the cable are pulled against each other, and all the cables are transformed from a bent state to a straight state, avoiding the problem that due to the deformable nature of the cable itself, the cable is not completely straight, but partially bent, resulting in inconsistent burning position and length of each cable to be detected, affecting the detection data.

[0040] After the cables are installed, the connecting rod 4 is manually rotated ninety degrees clockwise around the rotating part on the slide plate 3 as viewed from right to left, so that the connecting rod 4 is changed from a horizontal state to a vertical state. The latch 5 is then manually inserted into the slot 4001 to lock the connecting rod 4. The connecting rod 4 is then manually pushed to the left by the pull rod 222 so that all the cables are aligned with the nozzle of the blowtorch 12. The blowtorch 12 is then started to burn the cables. The switch door of the test box 1 is closed, and the air pump 14 is started at the same time. The air pump 14 pumps the air in the test box 1 into the external purification device through the suction frame 13, so that the harmful gases generated by the burning cables are sucked away to avoid the accumulation of harmful gases in the test box 1 and causing artificial inhalation. , affecting the health of the body. At the same time, the outside air will enter the test box 1 from the air inlet slot 1002, so that the outside air blows the harmful gas upward, so that the harmful gas is quickly sucked away by the suction frame 13. After the blowtorch 12 burns the cable for thirty to forty minutes, the blowtorch 12 is manually turned off to stop burning the cable. Then the switch door of the test box 1 is manually opened, and the pull rod 222 is manually pulled. The pull rod 222 drives the connecting rod 4 and the slide plate 3 to move completely to the extension part 1001. Then, the connecting rod 4 on the right side is manually held with one hand, and the pin 5 is pulled out of the slot 4001 with the other hand. Then, the connecting rod 4 is rotated counterclockwise by 90 degrees from right to left as the reference, and the two legs 15 facing downward are rotated counterclockwise by 90 degrees, and then rotated again to the position as shown in the figure. Figure 7In the state shown, at this time, since the cable is facing upward and in a straight state, the position of carbonization on the cable surface can be measured manually using a measuring tool to obtain accurate data. After the measurement is completed, the two legs 15 facing downward are manually turned clockwise by 90 degrees, so that the two legs 15 facing downward are re-engaged in the card slot 1501, and then the connecting rod 4 is manually rotated 180 degrees clockwise around the rotating part based on the reference from right to left, and the two legs 15 facing upward are rotated counterclockwise by 90 degrees, so that the two legs 15 facing upward support the ground and the cable faces downward, and then the fastener 9 is manually twisted with a wrench so that the fastener 9 no longer locks the slide plate 7, so that the cable is locked by its own weight. It falls downward, but considering that the cable is carbonized after burning, part of the cable will adhere to the surface of the two adjacent clamps 8, making it difficult for the cable to detach. Therefore, the clamp 8 is pushed back and forth manually to make the U-shaped gap between the two adjacent clamps 8 quickly increase and decrease, so that the two adjacent clamps 8 and the adhered cable pull each other, making it easier to separate the cable from the clamp 8. If the cable has not yet separated from the clamp 8, the pressing part 181 is pressed back and forth by manual fingers, so that the scraper 18 scrapes the surface of the clamp 8, so that the scraper 18 quickly separates the adhered cable from the clamp 8. While the manual fingers press the pressing part 181 back and forth, the spring 19 contracts and stretches back and forth.

[0041] Taking into account that, since the cable is squeezed and clamped by the clamp 8, when the cable surface is carbonized, the carbonized impurities will adhere to the upper and lower surfaces of the support rod 10, and the cable made of fire-proof material will not form a fluid after burning, so the carbonized impurities will only adhere to the position in contact with it. In order to avoid the residual carbonized impurities causing the subsequent carbonized cables to adhere more tightly during the next inspection, therefore, after all the cables are separated from the clamp 8, the rightmost clamp 8 is manually pushed to the left so that all the clamps 8 and scrapers 18 are close to each other until the two adjacent scrapers 18 are attached together and stop. In this process, the inclined surface 3 1801 will scrape the upper and lower surfaces of the support rod 10 to remove the adhered carbonized impurities. Scraping. When two adjacent scrapers 18 are attached together, the bevel three 1801 on the two adjacent scrapers 18 forms a V-shape, and the scraped carbonized impurities accumulate in the V-shape. At this time, the pressing part 181 is pressed manually to make the scraper 18 scrape the contacting surface of the clamping plate 8 until the bevel three 1801 of the scraper 18 scrapes the entire contacting surface of the clamping plate 8 and stops. At this time, the manual operation only needs to take a tool corresponding to the V-shape formed by the bevel three 1801 on the two adjacent scrapers 18, and insert the tool between the two adjacent scrapers 18 to remove all the carbonized impurities scraped by the scraper 18, thereby avoiding the problem that the residual carbonized impurities will make the subsequent carbonized cable adhere tighter.

[0042] Example 2

[0043] On the basis of Example 1, Figure 1 As shown, it also includes a reel 50, a baffle 51 and a pull rope 52; a plurality of air inlets are opened on the upper front side and the upper rear side of the test box 1, and all the air inlets are connected to the test box 1; a reel 50 is bolted to the front and rear sides of the test box 1; a baffle 51 is reeled in each reel 50; and two pull ropes 52 are connected to the bottom of each reel 50.

[0044] An experimental method for flame retardant and fire resistant experimental equipment for wires and cables, comprising the following steps:

[0045] Step 1: First, manually open the switch door of the test box 1, then manually pull the pull rod 222 to move to the right, the pull rod 222 pulls the connecting rod 4, and the connecting rod 4 drives another connecting rod 4 and the slide plate 3 to move to the right along the slide rail 2 synchronously through the connecting plate 6 until the slide plate 3 completely moves to the extension part 1001 and stops;

[0046] Step 2: Hold the right connecting rod 4 with one hand and pull the pin 5 out of the slot 4001 with the other hand, then rotate the connecting rod 4 180 degrees counterclockwise from right to left, so that the two connecting rods 4 in the vertical state are rotated to a horizontal state, so as to facilitate manual installation of the cable;

[0047] Step 3: Manually insert the upper end of the cable to be tested into the gap between the two adjacent clamping plates 8 on the front side, and insert the lower end of the cable to be tested into the gap between the two adjacent clamping plates 8 on the rear side, with the upper end and the lower end of the cable corresponding to each other;

[0048] Step 4: Manually push the rightmost clamping plate 8 to move to the left, and at the same time, the rightmost clamping plate 8 pushes the rotating shaft on the diamond-shaped telescopic frame 11 in contact with it to move synchronously, so that the diamond-shaped telescopic frame 11 contracts, and the diamond-shaped telescopic frame 11 contracts while pushing the remaining clamping plates 8 closer to each other, so as to clamp all the cables at the same time;

[0049] Step 5: Manually rotate the connecting rod 4 around the rotating part on the slide plate 1 3 by 90 degrees clockwise from right to left, so that the connecting rod 4 is changed from a horizontal state to a vertical state, and then manually insert the latch 5 into the slot 4001 to lock the connecting rod 4;

[0050] Step 6: Then manually push the connecting rod 4 to the left through the pull rod 222 so that all the cables are aligned with the nozzle of the blowtorch 12, and then start the blowtorch 12 to burn the cables.

[0051] Here is how the above example works:

[0052] Considering that cables of different sizes and batches need to be measured, and in order not to affect the accuracy of subsequent experimental data, it is necessary to wait for the temperature of the test box 1 to drop to room temperature before conducting the next experiment. The waiting time is long, which affects the detection efficiency. Therefore, when the test box 1 needs to be cooled down quickly, the pull rope 52 on the right side of the reel 50 is manually pulled to make the reel 50 reel up the baffle 51, so that the baffle 51 no longer blocks the air inlet, thereby increasing the outside cold air entering the test box 1. Figure 1 As shown, at the same time, the air pump 14 is started to suck the hot air in the test box 1 through the suction frame 13, so that the hot air in the test box 1 is discharged, and the cold air from the outside enters the test box 1 for cooling. When the burning experiment is carried out, the pull rope 52 on the left side of the reel 50 is manually pulled to make the reel 50 release the baffle 51, so that the baffle 51 completely blocks the air inlet, so that only the three air inlet slots 1002 at the bottom can allow the outside air to enter the test box 1, so as to avoid the problem of too much cold air causing inaccurate burning experiments.

[0053] Although the present disclosure has been described with respect to only a limited number of embodiments, those skilled in the art having benefit of this disclosure will appreciate that various other embodiments can be devised without departing from the scope of the present invention. Accordingly, the scope of the present invention should be limited only by the appended claims.

Claims

1. A flame retardant and fire resistant test equipment for wires and cables, comprising a test box (1) and a blowtorch (12); the blowtorch (12) is installed in the test box (1), and an extension portion (1001) is provided at the bottom of the test box (1); the characteristics are: The test box also includes a slide rail (2); a slide rail (2) is installed at the bottom of the test box (1); a slide plate (3) is slidably connected to the slide rail (2); the slide plate (3) is rotatably connected to a plurality of connecting rods (4); a latch (5) is slidably connected to the right side of the slide plate (3); a slot (4001) is provided on the right side of the right connecting rod (4), and the latch (5) and the slot (4001) are aligned with each other and fit into each other; each connecting rod (4) is provided with a slide groove (4002); all the connecting rods (4) are commonly connected with a plurality of connecting plates (6), the upper connecting plate (6) slides in the corresponding slide groove (4002), and the lower connecting plate (6) is fixedly connected to the corresponding connecting rod (4); a pull rod (222) is fixedly connected to the right connecting plate (6); each connecting plate (6) is slidably connected to a slide plate (7) on the right side; each slide plate (7) is fixedly connected to a A clamping plate (8), the left part of each connecting plate (6) is fixedly connected to another clamping plate (8); each connecting plate (6) has a portion that is rotatably connected to a fastener (9); a plurality of support rods (10) are fixedly connected to the left side of the clamping plate (8) located on the rightmost side, and all the support rods (10) on each clamping plate (8) on the rightmost side are slidably connected to a plurality of clamping plates (8), a second slide groove (8001) is provided on the front side of each clamping plate (8), all the support rods (10) form a U-shaped gap with the corresponding clamping plate (8), and each clamping plate (8) located on the leftmost side is fixedly connected to the corresponding connecting plate (6); each connecting plate (6) is slidably connected to a rhombus-shaped telescopic frame (11), each rhombus-shaped telescopic frame (11) is rotatably connected to each other through a plurality of rotating shafts, and the rotating shafts of all the rhombus-shaped telescopic frames (11) are slidably connected to the second slide groove (8001) on the corresponding clamping plate (8).

2. A flame retardant and fire resistant test equipment for wires and cables according to claim 1, characterized in that: It also includes a support foot (15); a slot (1501) is provided on the front and rear sides of the upper portion of each connecting rod (4), and a support foot (15) is rotatably connected in each slot (1501).

3. A flame retardant and fire resistant test equipment for wires and cables according to claim 2, characterized in that: A second inclined surface (1502) facing the inside of the slot (1501) is provided on a side of each support leg (15) away from the rotating portion.

4. A flame retardant and fire resistant test equipment for wires and cables according to any one of claims 1-2, characterized in that: It also includes a rocker (16) and a slider (17); the right side surface of the upper part of the right connecting rod (4) is rotatably connected to the rocker (16), and the surface of the rocker (16) is provided with a thread; the right side of the connecting plate (6) located above is fixedly connected to the slider (17), and the rocker (16) is rotatably connected to the slider (17).

5. A flame retardant and fire resistant test equipment for wires and cables according to claim 4, characterized in that: The rocker (16) grip is roughly designed.

6. A flame retardant and fire resistant test equipment for wires and cables according to claim 1, characterized in that: A suction frame (13) and an air pump (14); a plurality of air inlet grooves (1002) are provided on the front side of the test box (1); a suction frame (13) is fixedly connected to the upper part of the test box (1), and the suction frame (13) is connected to the inside of the test box (1); and the suction frame (13) is provided with an activated carbon adsorption layer.

7. A flame retardant and fire resistant test equipment for wires and cables according to claim 1, characterized in that: It also includes a scraper (18) and a spring (19); the opposing surfaces of all two adjacent clamps (8) are slidably connected to a scraper (18), each scraper (18) is provided with a third inclined surface (1801), and the tip of the third inclined surface (1801) is flush with the rear surface of the support rod (10); the opposing surfaces of all two adjacent clamps (8) are fixedly connected to a plurality of springs (19), and all the springs (19) on one side of each clamp (8) are fixedly connected to the corresponding scraper (18).

8. A flame retardant and fire resistant test equipment for wires and cables according to claim 7, characterized in that: A collecting groove (311) is provided on the slide plate (3), and all the clamping plates (8) are located directly above the collecting groove (311).

9. A flame retardant and fire resistant test equipment for wires and cables according to claim 6, characterized in that: It also includes a reel (50), a baffle (51) and a pull rope (52); a plurality of air inlets are provided at the upper front side and the upper rear side of the test box (1), and all the air inlets are connected to the inside of the test box (1); a reel (50) is fixedly connected to the front side and the rear side of the test box (1); a baffle (51) is reeled in each reel (50); and a plurality of pull ropes (52) are connected to the bottom of each reel (50).

10. A flame retardant and fire resistant test equipment for wires and cables according to claim 9, characterized in that: The test method of the flame retardant and fire resistant test equipment for wires and cables comprises the following steps: Step 1: First, manually open the switch door of the test box (1), then manually pull the pull rod (222) to move to the right, the pull rod (222) pulls the connecting rod (4), and the connecting rod (4) drives another connecting rod (4) and the slide plate (3) to move synchronously to the right along the slide rail (2) through the connecting plate (6), until the slide plate (3) is completely moved to the extension part (1001) and stops; Step 2: manually hold the right connecting rod (4) with one hand, and pull the pin (5) out of the slot (4001) with the other hand, and then rotate the connecting rod (4) counterclockwise by 180 degrees from right to left as a reference, so that the two connecting rods (4) in the vertical state are rotated into a horizontal state, so as to facilitate manual installation of the cable; Step 3: manually insert the upper end of the cable to be tested into the gap between the two adjacent clamping plates (8) on the front side, and insert the lower end of the cable to be tested into the gap between the two adjacent clamping plates (8) on the rear side. In the gap between two adjacent clamping plates (8), the upper end and the lower end of the cable correspond to each other; Step 4: manually push the rightmost clamping plate (8) to move to the left, and at the same time, the rightmost clamping plate (8) pushes the rotating shaft on the diamond-shaped telescopic frame (11) in contact with it to move synchronously, so that the diamond-shaped telescopic frame (11) contracts, and the diamond-shaped telescopic frame (11) contracts while pushing the remaining clamping plates (8) closer to each other, so that all the cables are clamped at the same time; Step 5: manually move the connecting rod (4) around The rotating part on the slide plate (3) is rotated clockwise by 90 degrees from right to left, so that the connecting rod (4) is changed from a horizontal state to a vertical state, and then the latch (5) is manually inserted into the slot (4001) to lock the connecting rod (4); Step six: Then, the connecting rod (4) is manually pushed to the left through the pull rod (222) so that all the cables are aligned with the nozzle of the blowtorch (12), and then the blowtorch (12) is started to burn the cables.

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