Bunched cable combustion performance testing device

Abstract

The invention relates to the technical field of bunched cable combustion performance testing equipment, in particular to a bunched cable combustion performance testing device which comprises a testing support, a testing box, a hoisting module, a combustion module and a smoke exhaust module. An isolation smoke guide plate is fixed in the test box, the isolation smoke guide plate divides the interior of the test box into a test cavity and an installation cavity, and the isolation smoke guide plate comprises a fixed plate body fixedly connected with the test box, a movable plate body rotationally connected with the test box and a driving assembly fixedly connected with the test box. The interior of the test box is isolated into the test cavity and the mounting cavity through the isolation smoke guide plate, waste gas generated by cable combustion can be independently discharged, an isolation barrier is formed, the overflow path of the waste gas is blocked, the safety of the combustion performance test device is improved, the isolation smoke guide plate adopts an openable structure, the sealing performance of the test cavity is ensured, and the test efficiency is improved. And the operation of the hoisting module is prevented from being interfered.

Description

Technical Field

[0001] The invention relates to the technical field of bundled cable combustion performance testing equipment, and in particular to a bundled cable combustion performance testing device. Background Art

[0002] The bundled cable combustion performance test is a device used to evaluate the combustion characteristics of cables under fire conditions. It is mainly used to test key parameters of cables such as flame retardancy, flame propagation speed, and smoke generation.

[0003] At present, the test equipment for the combustion performance of bundled cables mainly includes structures such as a combustion chamber, a sample holder, a burner, a smoke collection system, and a hoisting device. During the test, the bundled cable needs to be fixed on the sample holder first, and then the sample holder is hoisted to a vertical position by the hoisting device. The top of the combustion chamber is usually provided with an opening structure to facilitate the traction of the hook. Therefore, when the bundled cable is burned, the exhaust gas generated is easy to escape from the opening structure, causing pollution to the test environment, reducing the working environment of the combustion performance test device, and causing deviations in the test data. Summary of the invention

[0004] In view of this, the purpose of the present invention is to propose a bundled cable combustion performance testing device to solve the problem that during the combustion test of the bundled cables, the exhaust gas generated is easily dissipated outward from the opening structure, causing pollution to the test environment, reducing the working environment of the combustion performance testing device, and causing deviations in the test data.

[0005] Based on the above purpose, the present invention provides a bundled cable combustion performance test device, including: a test bracket for fixing the test cable; a test box, an isolation smoke guide plate is fixed inside the test box, the isolation smoke guide plate divides the test box into a test chamber and an installation chamber, the isolation smoke guide plate includes a fixed plate body fixedly connected to the test box, a movable plate body rotatably connected to the test box, and a driving assembly fixedly connected to the test box, the driving assembly has a rotating driving end for driving the movable plate body, the movable plate body is provided with a movable smoke guide hole, a detachable clamping block is fixed in the test chamber, and the test bracket can It is vertically arranged in the test cavity and fixed by the clamping block; a lifting module is fixed to the outer end of the test box, and has a hook that can pass downward through the installation cavity and extend into the test cavity, and the hook is used to pull the test bracket; a combustion module is arranged in the test box, and has a combustion end for testing the cable; a smoke exhaust module includes a smoke guide hood and a smoke exhaust connector fixed in the installation cavity, a smoke guide channel is arranged in the smoke guide hood, one end of the smoke guide channel is connected to the smoke exhaust connector, and the other end of the smoke guide channel extends out of the test box, and the movable smoke guide hole can be connected to the smoke exhaust connector.

[0006] In an optional example, the smoke exhaust connector has a connecting channel that runs through the smoke exhaust connector, and one end of the connecting channel toward the movable smoke guide hole can move vertically, and the movable plate body can interfere with the connecting channel and connect the connecting channel with the movable smoke guide hole.

[0007] In an optional example, the smoke exhaust connector includes an upper base, a lower base and an elastic telescopic tube, the upper base is fixedly connected to the smoke guide hood, the lower base is slidably connected to the upper base, an upper through hole is provided on the upper base, a lower through hole is provided on the lower base, one end of the elastic telescopic tube is fixedly connected to the upper base and communicated with the upper through hole, and the other end of the elastic telescopic tube is fixedly connected to the lower base and communicated with the lower through hole.

[0008] In an optional example, a plurality of sliding guide pillars are fixed to the lower end of the upper base, a plurality of sliding holes matching the sliding guide pillars are opened on the lower base, a limiting nut is fixed to the lower end of the sliding guide pillar, a spring is mounted on the outer wall of the sliding guide pillar, one end of the spring is in contact with the upper base, and the other end of the spring is in contact with the lower base.

[0009] In an optional example, the movable plate body further has a cooling channel.

[0010] In an optional example, the movable plate body includes a first heat exchange plate and a second heat exchange plate fixed to each other, the cooling channel is formed between the first heat exchange plate and the second heat exchange plate, the first heat exchange plate is arranged in the direction of the test cavity, and the second heat exchange plate is arranged in the direction of the installation cavity, the movable smoke guide hole is arranged on the first heat exchange plate, and an extension portion is arranged at the upper end of the movable smoke guide hole, and the extension portion passes through the second heat exchange plate.

[0011] In an optional example, a heat exchange groove extending downward is formed at the upper end of the first heat exchange fin, and the cooling channel is formed at the lower end of the second heat exchange fin, and the cooling channel passes through the heat exchange groove.

[0012] In an optional example, two fluid quick-connect valves are fixed in the installation cavity, both ends of the cooling channel are set towards the installation cavity, both ends of the cooling channel are fixed with one-way valves, and the fluid quick-connect valves can be connected to the one-way valves.

[0013] In an optional example, a movable lug is fixed on the movable plate body, a mounting bracket is fixed in the mounting cavity, a driven shaft is mounted on the mounting bracket via a bearing connection, the movable lug is sleeved on the outer wall of the driven shaft via a key connection, a driven bevel gear is fixed on the outer wall of the driven shaft, the driving assembly includes a driving motor, the driving motor is fixed in the mounting cavity, the rotating driving end includes a driving bevel gear, the driving bevel gear is fixed to the output shaft of the driving motor via a key connection, and the driving bevel gear is meshed with the driven bevel gear.

[0014] In an optional example, the test box includes a test frame, side panels wrapped around the side walls of the test frame, and a top plate fixed to the top of the test frame. The top plate is provided with a top through groove that vertically penetrates the top plate, and an isolation door is installed on one of the side panels in a rotatable manner.

[0015] The beneficial effect of the present invention is that the test box is separated into a test chamber and an installation chamber by the isolating smoke guide plate, so that the exhaust gas generated by the cable combustion can be discharged independently, forming an isolation barrier, blocking the overflow path of the exhaust gas, and improving the safety of the combustion performance testing device. The isolating smoke guide plate adopts an openable and closable structure, which ensures the sealing of the test chamber while avoiding interference with the operation of the lifting module. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0018] Figure 2 It is a schematic diagram of the front view of the test box in an embodiment of the present invention;

[0019] Figure 3 Schematic diagram of the three-dimensional structure of the test box in an embodiment of the present invention;

[0020] Figure 4 Schematic diagram of the three-dimensional structure of the smoke exhaust module in an embodiment of the present invention;

[0021] Figure 5 Schematic diagram of the explosion structure of the smoke exhaust module in an embodiment of the present invention;

[0022] Figure 6 for Figure 5 A magnified schematic diagram of the structure in I;

[0023] Figure 7 This is a schematic diagram of the exploded structure of the smoke exhaust connector in an embodiment of the present invention;

[0024] Figure 8 The exploded structure of the movable plate in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0025] Fig. 9 The exploded structure of the movable plate in the embodiment of the present invention is shown in FIG. Figure 2 .

[0026] The markings in the figure are: 1. test bracket; 2. test box; 201. test cavity; 202. installation cavity; 21. test frame; 22. side plate; 23. top plate; 231. top slot; 24. isolation door; 3. lifting module; 31. hook; 4. combustion module; 41. combustion end; 5. smoke exhaust module; 51. smoke guide cover; 511. smoke guide channel; 52. smoke exhaust connector; 521. upper base; 5211. upper through hole; 522. lower base; 5221. lower through hole; 5222. sliding hole; 523. elastic telescopic tube; 5201. connecting channel; 52 4. Sliding guide column; 525. Limit nut; 526. Spring; 6. Isolating smoke guide plate; 61. Fixed plate body; 611. Vertical through groove; 62. Movable plate body; 6201. Movable smoke guide hole; 62011. Extension part; 6202. Cooling channel; 621. First heat exchange plate; 6211. Heat exchange groove; 622. Second heat exchange plate; 623. Movable support ear; 624. Mounting bracket; 625. Driven shaft; 626. Driven bevel gear; 63. Driving assembly; 631. Driving motor; 632. Driving bevel gear; 7. Clamping block; 8. Fluid quick-connect valve; 9. One-way valve. DETAILED DESCRIPTION

[0027] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0028] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] In one embodiment, see Figures 1 to 3 As shown, a bundled cable combustion performance test device provided by the present invention includes a test bracket 1, a test box 2, a lifting module 3, a combustion module 4 and a smoke exhaust module 5.

[0030] The test bracket 1 is used to fix the test cable. The test cable is laid along the length direction of the test bracket 1 and fixed by winding with iron wire.

[0031] An isolation smoke guide plate 6 is fixed inside the test box 2, and the isolation smoke guide plate 6 divides the test box 2 into a test chamber 201 and an installation chamber 202. The isolation smoke guide plate 6 includes a fixed plate body 61 fixedly connected to the test box 2, a movable plate body 62 rotatably connected to the test box 2, and a driving assembly 63 fixedly connected to the test box 2. The driving assembly 63 has a rotating driving end for driving the movable plate body 62. The movable plate body 62 is provided with a movable smoke guide hole 6201. A detachable clamping block 7 is fixed in the test chamber 201. The test bracket 1 can be vertically arranged in the test chamber 201 and fixed by the clamping block 7. Among them, the rotation center line of the movable plate body 62 is arranged along the width direction of the test box 2; a groove matching the test bracket 1 is opened on the clamping block 7, and the clamping block 7 is connected to the test box 2 by bolt connection; a vertical through groove 611 penetrating the fixed plate body 61 is vertically opened on the fixed plate body 61, and the vertical through groove 611 matches the movable plate body 62, and the movable plate body 62 is connected to the external space by rotating the test cavity 201.

[0032] The lifting module 3 is fixed to the outer end of the test box 2, and has a hook 31 that can pass through the installation cavity 202 downward and extend into the test cavity 201. The hook 31 is used to pull the test bracket 1. The lifting module 3 includes a lifting machine, and the lifting rope of the lifting machine passes through the vertical through slot 611 and is connected to the hook 31.

[0033] The combustion module 4 is arranged in the test box 2, and has a combustion end 41 for testing the cable. The combustion module 4 is connected to an external gas supply device, which is used to provide combustion gas, and the gas end heats the test cable after ignition; the combustion module 4 is fixed in the test box 2 in a detachable manner, such as by bolt connection.

[0034] The smoke exhaust module 5 includes a smoke guide cover 51 and a smoke exhaust connector 52 fixed in the installation cavity 202. A smoke guide channel 511 is provided in the smoke guide cover 51. One end of the smoke guide channel 511 is connected to the smoke exhaust connector 52. The other end of the smoke guide channel 511 extends out of the test box 2. The movable smoke guide hole 6201 can be connected to the smoke exhaust connector 52. The smoke guide cover 51 is connected to an external negative pressure device, and the negative pressure device is used to provide negative pressure to extract gas in the smoke exhaust channel.

[0035] Specifically, when the test bracket 1 needs to be lifted, the lifting module 3 works to drive the hook 31 to move, and the hook 31 pulls one end of the test bracket 1 upward until it is pulled to the set position. At this time, the operator fixes the test bracket 1 through the clamping block 7, and the operator climbs to the top of the test bracket 1 through the test bracket 1, detaches the hook 31 from the test bracket 1, and then moves the hook 31 out of the test chamber 201, and then the rotating driving end works to drive the rotation of the movable plate body 62 until the movable plate body 62 moves to reset and closes the test chamber 201; during the combustion test of the bundled cables, the exhaust gas generated by the combustion flows into the smoke guide channel 511 through the movable smoke guide hole 6201 and is then discharged.

[0036] In summary, the present invention isolates the test box 2 into a test chamber 201 and an installation chamber 202 through the isolation smoke guide plate 6, so that the exhaust gas generated by the cable combustion can be discharged independently, forming an isolation barrier, blocking the overflow path of the exhaust gas, and improving the safety of the combustion performance testing device. In addition, the isolation smoke guide plate 6 adopts an openable and closable structure, which ensures the sealing of the test chamber 201 while avoiding interference with the operation of the lifting module 3.

[0037] In an alternative example, see Figures 1 to 3 As shown, since the movable plate body 62 needs to rotate, the lower end of the smoke exhaust connector 52 will interfere with the rotation of the movable plate body 62, and the smoke exhaust connector 52 cannot fit tightly with the movable smoke guide hole 6201. In order to further improve the sealing performance when the movable plate body 62 is connected to the smoke exhaust connector 52, the smoke exhaust connector 52 has a connecting channel 5201 that runs through the smoke exhaust connector 52, and one end of the connecting channel 5201 toward the movable smoke guide hole 6201 can move vertically, and the movable plate body 62 can interfere with the connecting channel 5201, and make the connecting channel 5201 communicate with the movable smoke guide hole 6201.

[0038] Specifically, the lower end of the smoke exhaust connector 52 of this example adopts a movable design, so that it can automatically adjust its height according to the position of the movable plate body 62 to ensure a close fit, and ensure that the movable plate body 62 can rotate freely without hindrance, while further improving the sealing of the connection to prevent smoke leakage and ensure the normal operation of the system.

[0039] In an alternative example, see Figures 1 to 6 As shown, the smoke exhaust connector 52 includes an upper base 521, a lower base 522 and an elastic telescopic tube 523. The upper base 521 is fixedly connected to the smoke guide cover 51 by bolt connection, and the lower base 522 is slidably connected to the upper base 521. The upper base 521 is provided with an upper through hole 5211, and the lower base 522 is provided with a lower through hole 5221. One end of the elastic telescopic tube 523 is fixedly connected to the upper base 521 and communicates with the upper through hole 5211, and the other end of the elastic telescopic tube 523 is fixedly connected to the lower base 522 and communicates with the lower through hole 5221. The elastic telescopic tube 523 can be made of metal or plastic, such as a metal bellows or a plastic bellows, etc.; the end of the elastic telescopic tube 523 can be fixed by adhesive and a clamp.

[0040] Specifically, this example utilizes the stretchability and elasticity of the elastic telescopic tube to adapt to the vertical movement of the end of the smoke exhaust connector 52. When the movable plate body 62 rotates or moves, the elastic telescopic tube 523 can be retracted to avoid interference with the rotation of the movable plate body 62, thereby ensuring the sealing when the movable plate body 62 is connected to the smoke exhaust connector 52.

[0041] In an alternative example, see Figures 1 to 6 As shown, a plurality of sliding guide posts 524 are fixed to the lower end of the upper base 521 by riveting, a plurality of sliding holes 5222 matching the sliding guide posts 524 are provided on the lower base 522, a limiting nut 525 is fixed to the lower end of the sliding guide post 524, a spring 526 is sleeved on the outer wall of the sliding guide post 524, one end of the spring 526 is in conflict with the upper base 521, and the other end of the spring 526 is in conflict with the lower base 522. The lower part of the sliding guide post 524 is provided with an external thread, and the limiting nut 525 is sleeved on the external thread by threaded connection.

[0042] Specifically, in this example, the elastic force of the spring 526 pushes the lower base 522 to move downward, thereby ensuring close contact between the lower base 522 and the movable plate body 62 and improving the sealing performance of the smoke exhaust connector 52 .

[0043] In an alternative example, see Figures 1 to 6As shown, when the bundled cables are burned, the heat in the exhaust gas is easily transferred directly to the test space through the smoke exhaust module 5, causing the temperature of the space around the test device to rise, reducing the accuracy of data collection of the test device, and because the heat moves upward, the lifting module 3 is prone to heat accumulation in a long-term test environment, resulting in a decrease in the service life of the lifting module 3. In order to ensure the service life of the lifting module 3, a cooling channel 6202 is also provided in the movable plate body 62. The cooling channel 6202 is connected to an external cooling device, and the cooling device is used to provide a refrigerant.

[0044] Specifically, this example adds a cooling channel 6202 so that the bottom of the movable plate can absorb the heat generated by the bundled cables during the combustion test, reduce the temperature of the space around the test device, improve the working environment of the operator, reduce the error of data collection, and avoid heat accumulation in the lifting module 3, thereby lowering the operating temperature of the lifting module 3, reducing the damage to the lifting module 3 caused by high temperature, and extending the service life of the lifting module 3.

[0045] In an alternative example, see Figures 1 to 9 As shown, the movable plate body 62 includes a first heat exchange plate 621 and a second heat exchange plate 622 which are fixed to each other, a cooling channel 6202 is formed between the first heat exchange plate 621 and the second heat exchange plate 622, the first heat exchange plate 621 is arranged in the direction of the test cavity 201, and the second heat exchange plate 622 is arranged in the direction of the installation cavity 202, and the movable smoke guide hole 6201 is arranged on the first heat exchange plate 621, and an extension portion 62011 is arranged at the upper end of the movable smoke guide hole 6201, and the extension portion 62011 passes through the second heat exchange plate 622. Among them, the first heat exchange plate 621 and the second heat exchange plate 622 are formed by stamping, and the first heat exchange plate 621 and the second heat exchange plate 622 are fixed by welding. The first heat exchange plate 621 and the second heat exchange plate 622 are made of metal materials that can transfer heat, such as alloy steel, alloy aluminum, etc.; the upper end of the second heat exchange plate 622 is vertically provided with a heat exchange groove that penetrates the second heat exchange plate 622, and the extension portion 62011 passes through the heat exchange groove.

[0046] Specifically, this example simplifies the manufacturing process of the movable plate body 62 and improves the flexibility and economy of the production of the movable plate body 62 by splitting the movable plate body 62 into the first heat exchange fin 621 and the second heat exchange fin 622 .

[0047] In an alternative example, see Figures 1 to 9As shown, a heat exchange groove 6211 extending downward is provided at the upper end of the first heat exchange fin 621, and a cooling channel 6202 is provided at the lower end of the second heat exchange fin 622, and the cooling channel 6202 passes through the heat exchange groove 6211. The heat exchange groove 6211 and the first heat exchange fin 621 are formed by stamping, and the cooling channel 6202 and the second heat exchange fin 622 are formed by stamping.

[0048] Specifically, this example increases the contact area and cooling range of the coolant by the heat exchange groove 6211 on the first heat exchange plate 621, further improves the heat exchange efficiency of the movable plate 62, avoids heat accumulation, reduces the damage to the lifting module 3 caused by high temperature, and extends the service life of the lifting module 3.

[0049] In an alternative example, see Figures 1 to 9 As shown, two fluid quick-connect valves 8 are fixed in the installation cavity 202, and both ends of the cooling channel 6202 are arranged toward the installation cavity 202, and a one-way valve 9 is fixed thereto, and the fluid quick-connect valve 8 can be connected to the one-way valve 9. The fluid quick-connect valve 8 can be connected to the one-way valve 9 only when the one-way valve 9 is in contact with the quick-connect valve, and when the connection is disconnected, the one-way valve 9 can prevent the coolant in the cooling channel 6202 from dripping out.

[0050] Specifically, this example controls the flow of coolant in the cooling channel 6202 through the cooperation of the one-way valve 9 and the fluid quick-connect valve 8, reduces the layout of the cooling pipeline, avoids the damage of the cooling pipeline due to long-term bending, and increases the service life of the movable plate body 62.

[0051] In an alternative example, see Figures 1 to 9 As shown, a movable lug 623 is fixed on the movable plate body 62 by welding, a mounting bracket 624 is fixed in the mounting cavity 202, a driven shaft 625 is mounted on the mounting bracket 624 by bearing connection, the movable lug 623 is sleeved on the outer wall of the driven shaft 625 by key connection, a driven bevel gear 626 is fixed on the outer wall of the driven shaft 625 by key connection, the driving assembly 63 includes a driving motor 631, the driving motor 631 is fixed in the mounting cavity 202 by bolt connection, the rotating driving end includes a driving bevel gear 632, the driving bevel gear 632 is fixed on the output shaft of the driving motor 631 by key connection, and the driving bevel gear 632 is meshed with the driven bevel gear 626. Among them, the driving motor 631 can control the rotation angle of the output shaft, and the driving motor 631 has a self-locking function; the movable lug 623 is welded to the upper end of the second heat exchange plate 622.

[0052] Specifically, in this example, through the operation of the driving motor 631, the output shaft of the driving motor 631 drives the driving bevel gear 632 to rotate, the driving bevel gear 632 drives the driven bevel gear 626 to rotate, the driven bevel gear 626 drives the driven shaft 625 to rotate, the driven shaft 625 drives the movable lug 623 to rotate, and the movable lug 623 drives the movable plate body 62 to rotate.

[0053] In an alternative example, see Figures 1 to 9 As shown, the test box 2 includes a test frame 21, a side plate 22 is fixed to the side wall of the test frame 21 by welding, a top plate 23 is fixed to the top of the test frame 21 by welding, a top through slot 231 is provided on the top plate 23 and vertically penetrates the top plate 23, and an isolation door 24 is installed on one side plate 22 by a rotating shaft. A side through slot is provided on one side plate 22, and the side through slot is connected to the test cavity 201.

[0054] Specifically, this example uses the test frame 21 as a carrier of the test box 2, which can effectively carry and facilitate transportation. At the same time, the rotatable isolation door 24 is used to control the connection between the test cavity 201 and the outside world, making it easy for the test bracket 1 to enter the test cavity 201.

[0055] In general, the present invention isolates the test box 2 into a test chamber 201 and an installation chamber 202 through an isolating smoke guide plate 6, so that the exhaust gas generated by the cable combustion can be discharged independently, forming an isolation barrier, blocking the overflow path of the exhaust gas, and improving the safety of the combustion performance testing device. At the same time, by adding a smoke exhaust connector 52, the lower end of the smoke exhaust connector 52 can be tightly fitted with the movable plate body 62 to avoid interfering with the rotation of the movable plate body 62, further improving the sealing when the movable plate body 62 and the smoke exhaust connector 52 are connected, and by adding a cooling flow channel 6202 in the movable plate body 62, the bottom of the movable plate can absorb the heat generated by the bundled cables during the combustion test, thereby avoiding heat accumulation of the lifting module 3 and improving the service life of the lifting module 3.

[0056] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0057] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bundled cable combustion performance test device, characterized in that: include: Test bracket (1), used to fix the test cable; A test box (2) is provided with an isolation smoke guide plate (6) fixed therein, wherein the isolation smoke guide plate (6) divides the inside of the test box (2) into a test chamber (201) and an installation chamber (202), the isolation smoke guide plate (6) comprising a fixed plate body (61) fixedly connected to the test box (2), a movable plate body (62) rotatably connected to the test box (2), and a driving assembly (63) fixedly connected to the test box (2), the driving assembly (63) having a rotation driving end for driving the movable plate body (62), the movable plate body (62) being provided with a movable smoke guide hole (6201), a detachable clamping block (7) being fixed in the test chamber (201), and the test bracket (1) being able to be arranged vertically in the test chamber (201) and fixed by the clamping block (7); A lifting module (3) is fixed to the outer end of the test box (2), and has a hook (31) that can pass through the installation cavity (202) downward and extend into the test cavity (201), wherein the hook (31) is used to pull the test bracket (1); A combustion module (4), arranged in the test box (2), having a combustion end (41) for testing the cable; The smoke exhaust module (5) comprises a smoke guide hood (51) and a smoke exhaust connector (52) fixed in the installation cavity (202); a smoke guide channel (511) is arranged in the smoke guide hood (51); one end of the smoke guide channel (511) is connected to the smoke exhaust connector (52); the other end of the smoke guide channel (511) extends out of the test box (2); and the movable smoke guide hole (6201) can be connected to the smoke exhaust connector (52).

2. The bundled cable combustion performance testing device according to claim 1, characterized in that: The smoke exhaust connector (52) has a connecting channel (5201) that runs through the smoke exhaust connector (52); one end of the connecting channel (5201) that faces the movable smoke guide hole (6201) can move vertically; the movable plate body (62) can come into contact with the connecting channel (5201) and connect the connecting channel (5201) to the movable smoke guide hole (6201).

3. The bundled cable combustion performance testing device according to claim 2, characterized in that: The smoke exhaust connector (52) comprises an upper base (521), a lower base (522) and an elastic telescopic tube (523); the upper base (521) is fixedly connected to the smoke guide cover (51); the lower base (522) is slidably connected to the upper base (521); an upper through hole (5211) is provided on the upper base (521); a lower through hole (5221) is provided on the lower base (522); one end of the elastic telescopic tube (523) is fixedly connected to the upper base (521) and communicates with the upper through hole (5211); the other end of the elastic telescopic tube (523) is fixedly connected to the lower base (522) and communicates with the lower through hole (5221).

4. The bundled cable combustion performance testing device according to claim 3, characterized in that: A plurality of sliding guide pillars (524) are fixed to the lower end of the upper base (521); a plurality of sliding holes (5222) matching the sliding guide pillars (524) are provided on the lower base (522); a limiting nut (525) is fixed to the lower end of the sliding guide pillar (524); a spring (526) is sleeved on the outer wall of the sliding guide pillar (524); one end of the spring (526) is in contact with the upper base (521), and the other end of the spring (526) is in contact with the lower base (522).

5. The bundled cable combustion performance testing device according to claim 1, characterized in that: The movable plate body (62) also has a cooling channel (6202) therein.

6. The bundled cable combustion performance testing device according to claim 5, characterized in that: The movable plate body (62) comprises a first heat exchange plate (621) and a second heat exchange plate (622) fixed to each other, the cooling channel (6202) is formed between the first heat exchange plate (621) and the second heat exchange plate (622), the first heat exchange plate (621) is arranged in the direction of the test cavity (201), and the second heat exchange plate (622) is arranged in the direction of the installation cavity (202), the movable smoke guide hole (6201) is arranged on the first heat exchange plate (621), and an extension portion (62011) is arranged at the upper end of the movable smoke guide hole (6201), and the extension portion (62011) passes through the second heat exchange plate (622).

7. The bundled cable combustion performance testing device according to claim 6, characterized in that: The upper end of the first heat exchange fin (621) is provided with a heat exchange groove (6211) extending downward, and the cooling channel (6202) is provided at the lower end of the second heat exchange fin (622), and the cooling channel (6202) passes through the heat exchange groove (6211).

8. The bundled cable combustion performance testing device according to claim 5, characterized in that: Two fluid quick-connect valves (8) are also fixed in the installation cavity (202), both ends of the cooling channel (6202) are arranged in the direction of the installation cavity (202), and both ends of the cooling channel (6202) are fixed with one-way valves (9), and the fluid quick-connect valves (8) can be connected to the one-way valves (9).

9. The bundled cable combustion performance testing device according to claim 1, characterized in that: A movable lug (623) is fixed on the movable plate body (62), a mounting bracket (624) is fixed in the mounting cavity (202), a driven shaft (625) is mounted on the mounting bracket (624) by means of a bearing connection, the movable lug (623) is sleeved on the outer wall of the driven shaft (625) by means of a key connection, a driven bevel gear (626) is fixed on the outer wall of the driven shaft (625), the driving component (63) comprises a driving motor (631), the driving motor (631) is fixed in the mounting cavity (202), the rotating driving end comprises a driving bevel gear (632), the driving bevel gear (632) is fixed on the output shaft of the driving motor (631) by means of a key connection, and the driving bevel gear (632) is meshed with the driven bevel gear (626).

10. The bundled cable combustion performance testing device according to claim 1, characterized in that: The test box (2) comprises a test frame (21), a side plate (22) wrapped around the side wall of the test frame (21), and a top plate (23) fixed to the top of the test frame (21); a top through groove (231) vertically penetrating the top plate (23) is provided on the top plate (23); and an isolation door (24) is rotatably mounted on one of the side plates (22).

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