Power cable fire resistance testing device

Abstract

The utility model discloses a power cable fire resistance testing device, and relates to the technical field of fire resistance testing, the power cable fire resistance testing device comprises a testing cabinet, the front side surface of the testing cabinet is rotatably connected with a cabinet door, the inside of the testing cabinet is provided with a flaming device, and the side surface of the testing cabinet is provided with a rotating device; the rotating device comprises a motor, the front side face of the motor is fixedly connected to the back side face of the test cabinet, an output shaft of the motor is fixedly connected with a rotating shaft, a first chain wheel fixedly penetrates through the circumferential face of the rotating shaft, and a chain is arranged on the circumferential face of the first chain wheel. The rotation of the output shaft of the motor is matched with the rotating shaft, the chain wheel I, the chain, the chain wheel II, the rotating rod, the supporting plate, the bottom plate, the pressing plate and other components in the rotating device, so that the rotating rod can drive the bottom plate and the pressing plate to rotate anticlockwise when rotating anticlockwise, a cable is rotated, and the cable can be comprehensively tested.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fire resistance test field, especially relate to power cable fire resistance testing device. BACKGROUND

[0002] The power cable fire resistance testing device is a device for evaluating the fire resistance performance of power cables under fire conditions.

[0003] According to a kind of cable fire resistance testing device (public number: CN 211206398 U) of publicity, including test box, fixed hearth is installed in the bottom position in test box, spray burner is installed on fixed hearth, adjusting switch that controls the flow of spray burner is installed on the front position on fixed hearth, metal gas pipe that is communicated with spray burner is equipped with on the left side position of fixed hearth, metal gas pipe is connected with natural gas tank outside test box, the upper and lower multiple fixed struts are respectively equipped on the left and right side walls in test box, fixed strut end is connected with eye ring, connecting pipe is installed on the bottom position of test box.The utility model provides a kind of cable fire resistance testing device, structure is cleverly arranged, and layout is reasonable, asbestos fireproof layer is arranged in the inner layer of test box, test safety is guaranteed, while flue gas is filtered by non-woven fabric and activated carbon layer, the flue gas discharged will not pollute air and stimulate personnel nasal cavity, and use feeling effect is good.

[0004] The above-mentioned application is installed with a fixed hearth at the bottom of the test box, and a spray burner assembly is installed on the fixed hearth, which cannot cool the cable after the test is completed, which may cause the staff to be accidentally scalded when taking the cable, therefore, the power cable fire resistance testing device is proposed. UTILITY MODEL CONTENTS

[0005] The utility model discloses a power cable fire resistance testing device, through the rotation of pivot and the internal bevel gear no.1 of water cooling device, rotation axis, bevel gear no.2, drive gear, rack, push plate, storage groove, water tank and other components are mutually cooperated, realize when drive gear counterclockwise rotation, will push rack to move forward, when rack moves forward, will push the column to move to water tank, when push the column moves to water tank, will drive extruding plate extrude the water in water tank, reach the water in water tank from water outlet, make through spray head to the cable cooling, solve the existing problem.

[0006] To solve the above technical problems, the utility model is realized by the following technical schemes:

[0007] The utility model discloses a power cable fire resistance testing device, including test cabinet, the positive side of test cabinet rotatable connection has the cabinet door, the inside of test cabinet is provided with spray fire device, the side of test cabinet is provided with rotating device;

[0008] The rotating device includes a motor, the front side of which is fixedly connected to the back side of the test cabinet. A rotating shaft is fixedly connected to the output shaft of the motor. A sprocket is fixedly passed through the circumference of the rotating shaft. A chain is mounted on the circumference of the sprocket. A second sprocket is mounted on the inner wall of the chain. A rotating rod is fixedly passed through the side of the second sprocket. The circumference of the rotating rod passes through the side of the test cabinet and is rotatably connected to the inner wall of the test cabinet. A support plate is fixedly connected to the side of the test cabinet. The side of the rotating rod is rotatably connected to the side of the support plate. A base plate is fixedly connected to the side of the rotating rod. A pressure plate is slidably connected to the side of the rotating rod. A through hole is opened at the top of the pressure plate, passing through the bottom of the base plate. A latch is slidably connected to the inner wall of the through hole.

[0009] Furthermore, the latch has a sliding groove inside, and a first locking block is slidably connected to the inner wall of the sliding groove. A second locking block is slidably connected to the inner wall of the sliding groove. A spring is fixedly connected to the front side of the first locking block, and the end of the spring away from the first locking block is fixedly connected to the back side of the second locking block. A connecting strip is fixedly connected to the side of the base plate. The function of the first and second locking blocks is to block the through hole, and the function of the spring is to allow the first and second locking blocks to reset using the spring when they are not pressed.

[0010] Furthermore, the circumferential surface of sprocket one meshes with the inner wall of the chain, and the inner wall of the chain meshes with the circumferential surface of sprocket two. The number of rotating rod, base plate, pressure plate, through hole, bolt, slide groove, first locking block, second locking block, and spring is set to two, and they are symmetrical about each other along the vertical central axis of the test cabinet. The function of the circumferential surface of sprocket one meshing with the inner wall of the chain is to drive the chain to rotate when sprocket one rotates. The function of the inner wall of the chain meshing with the circumferential surface of sprocket two is to drive sprocket two to rotate when the chain rotates. The function of the rotating rod, base plate, pressure plate, through hole, bolt, slide groove, first locking block, second locking block, and spring is set to two, and they are symmetrical about each other along the vertical central axis of the test cabinet, so as to better drive the cable to rotate.

[0011] Furthermore, a water-cooling device is provided on the outside of the test cabinet. The water-cooling device includes a bevel gear one, the circumferential surface of which is fixedly inserted through the circumferential surface of the rotating shaft. A fixing plate is fixedly connected to the back side of the test cabinet. A rotating shaft is rotatably connected to the bottom of the fixing plate. A bevel gear two is fixedly connected to the bottom of the rotating shaft. A drive gear is fixedly connected to the top of the rotating shaft. A sliding groove is provided on the back side of the test cabinet. A sliding plate is fixedly connected to the back side of the test cabinet. A rack is slidably connected to the top of the sliding plate. A push plate is fixedly connected to the side of the rack. A storage slot is provided on the top of the test cabinet. A water tank is slidably connected inside the storage slot. A water outlet is provided at the bottom of the water tank. A water pipe is fixedly connected to the inner wall of the water outlet. A nozzle is fixedly connected to one end of the water pipe. The function of the nozzle is to spray water to cool the cable after the test is completed.

[0012] Furthermore, the test cabinet has an opening on its back side, and a push column runs through the back side of the water tank. The circumferential surface of the push column is slidably connected to the inner wall of the water tank. A squeezing plate is fixedly connected to the front side of the push column, and the side of the squeezing plate is slidably connected to the inner wall of the water tank. The function of the squeezing plate is to push the water in the water tank.

[0013] Furthermore, a return spring is fixedly connected to the circumferential surface of the push column, and the end of the return spring away from the push column is fixedly connected to the back side of the water tank. The function of the return spring is to allow the push column to reset when the push plate stops pushing it. A collection box is slidably connected inside the test cabinet. The function of the collection box is to collect the water after the cable has been cooled.

[0014] Furthermore, the circumferential surface of the first bevel gear meshes with the circumferential surface of the second bevel gear, the circumferential surface of the drive gear meshes with the side surface of the rack, and the back side of the push column is located on the displacement trajectory of the push plate. The meshing of the circumferential surface of the first bevel gear with the circumferential surface of the second bevel gear is to drive the second bevel gear to rotate when the first bevel gear rotates. The meshing of the circumferential surface of the drive gear with the side surface of the rack is to drive the rack to move when the drive gear rotates.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model achieves the rotation of the motor output shaft and the interaction of components such as the rotating shaft, sprocket one, chain, sprocket two, rotating rod, support plate, base plate, and pressure plate inside the rotating device. When the rotating shaft rotates counterclockwise, it drives sprocket one to rotate counterclockwise. When sprocket one rotates counterclockwise, it drives the chain to rotate counterclockwise. When the chain rotates counterclockwise, it drives sprocket two to rotate counterclockwise. When sprocket two rotates counterclockwise, it drives the rotating rod to rotate counterclockwise. When the rotating rod rotates counterclockwise, it drives the base plate and pressure plate to rotate counterclockwise. This achieves the rotation of the cable, enabling comprehensive testing of the cable.

[0017] 2. This utility model achieves this by having the rotating shaft interact with the internal components of the water cooling device, such as bevel gear one, rotating shaft, bevel gear two, drive gear, rack, push plate, storage tank, and water tank. When the drive gear rotates counterclockwise, it pushes the rack forward. When the rack moves forward, it pushes the push column into the water tank. When the push column moves into the water tank, it drives the squeezing plate to squeeze the water in the water tank, thus pushing the water in the water tank to flow out of the outlet and cooling the cable through the nozzle.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a three-dimensional overall structural diagram of the rotating device of this utility model;

[0022] Figure 3 This is a three-dimensional overall structural diagram of the water cooling device of this utility model;

[0023] Figure 4 For the present utility model Figure 2 A three-dimensional magnified structural diagram at point A in the middle;

[0024] Figure 5 For the present utility model Figure 3 A three-dimensional magnified structural diagram at point B;

[0025] Figure 6 For the present utility model Figure 3 A magnified three-dimensional structural diagram at point C.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Test cabinet; 2. Cabinet door; 3. Flame-emitting device; 4. Rotating device; 41. Motor; 42. Shaft; 43. Sprocket 1; 44. Chain; 45. Sprocket 2; 46. Rotating rod; 47. Support plate; 48. Base plate; 49. Pressure plate; 410. Through hole; 411. Bolt; 412. Slide groove; 413. First locking block; 414. Second locking block; 415. Spring; 416. Connecting strip; 5. Water cooling unit 51. Bevel gear one; 52. Fixed plate; 53. Rotating shaft; 54. Bevel gear two; 55. Drive gear; 56. Sliding groove; 57. Slide plate; 58. Rack; 59. Push plate; 510. Storage groove; 511. Water tank; 512. Water outlet; 513. Water pipe; 514. Nozzle; 515. Movable port; 516. Push column; 517. Squeezing plate; 518. Return spring; 519. Collection box. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1-6 This utility model is a fire resistance testing device for power cables, including a test cabinet 1, a cabinet door 2 rotatably connected to the front and side of the test cabinet 1, a flame-spraying device 3 installed inside the test cabinet 1, and a rotating device 4 installed on the side of the test cabinet 1.

[0030] The rotating device 4 includes a motor 41. The front side of the motor 41 is fixedly connected to the back side of the test cabinet 1. The output shaft of the motor 41 is fixedly connected to a rotating shaft 42. A sprocket 43 is fixedly passed through the circumferential surface of the rotating shaft 42. A chain 44 is provided on the circumferential surface of the sprocket 43. A sprocket 45 is provided on the inner wall of the chain 44. A rotating rod 46 is fixedly passed through the side of the sprocket 45. The circumferential surface of the rotating rod 46 passes through the side of the test cabinet 1. The circumferential surface of the rotating rod 46 is rotatably connected to the inner wall of the test cabinet 1. A support plate 47 is fixedly connected to the side of the test cabinet 1. The side of the rotating rod 46 is rotatably connected to the side of the support plate 47. A base plate 48 is fixedly connected to the side of the rotating rod 46. A pressure plate 49 is slidably connected to the side of the rotating rod 46. A through hole 410 is opened at the top of the pressure plate 49. The through hole 410 passes through the bottom of the base plate 48. A latch 411 is slidably connected to the inner wall of the through hole 410.

[0031] The latch 411 has a groove 412 inside. The inner wall of the groove 412 is slidably connected to a first latch 413 and a second latch 414. A spring spring 415 is fixedly connected to the front side of the first latch 413. The end of the spring spring 415 away from the first latch 413 is fixedly connected to the back side of the second latch 414. A connecting strip 416 is fixedly connected to the side of the base plate 48. The function of the first latch 413 and the second latch 414 is to block the through hole 410. The function of the spring spring 415 is to allow the first latch 413 and the second latch 414 to be reset by the spring spring 415 when the first latch 413 and the second latch 414 are not pressed.

[0032] The circumferential surface of sprocket 43 engages with the inner wall of chain 44, and the inner wall of chain 44 engages with the circumferential surface of sprocket 45. The number of rotating rod 46, base plate 48, pressure plate 49, through hole 410, bolt 411, slide groove 412, first locking block 413, second locking block 414, and spring 415 are each set to two, and are symmetrical about each other along the vertical central axis of the test cabinet 1. The function of the circumferential surface of sprocket 43 engaging with the inner wall of chain 44 is to ensure that when sprocket 43 rotates... The chain 44 can be driven to rotate. The inner wall of the chain 44 meshes with the circumferential surface of the second sprocket 45 so that the second sprocket 45 can rotate when the chain 44 rotates. The number of the rotating rod 46, the base plate 48, the pressure plate 49, the through hole 410, the bolt 411, the slide 412, the first locking block 413, the second locking block 414 and the spring spring 415 are each set to two, and they are symmetrical about each other along the vertical central axis of the test cabinet 1 so as to better drive the cable to rotate.

[0033] The test cabinet 1 is externally equipped with a water-cooling device 5, which includes a bevel gear 51. The circumferential surface of the bevel gear 51 is fixedly connected to the circumferential surface of the rotating shaft 42. A fixing plate 52 is fixedly connected to the back side of the test cabinet 1. A rotating shaft 53 is rotatably connected to the bottom of the fixing plate 52. A bevel gear 54 is fixedly connected to the bottom of the rotating shaft 53. A drive gear 55 is fixedly connected to the top of the rotating shaft 53. A sliding groove 56 is provided on the back side of the test cabinet 1. A slide plate 57 is slidably connected to the top of the slide plate 57, and a push plate 59 is fixedly connected to the side of the rack 58. A storage slot 510 is opened on the top of the test cabinet 1, and a water tank 511 is slidably connected inside the storage slot 510. A water outlet 512 is opened at the bottom of the water tank 511, and a water pipe 513 is fixedly connected to the inner wall of the water outlet 512. A nozzle 514 is fixedly connected to one end of the water pipe 513. The function of the nozzle 514 is to spray water to cool down the cable after the test.

[0034] The test cabinet 1 has an opening 515 on its back side. A push column 516 runs through the back side of the water tank 511. The circumferential surface of the push column 516 is slidably connected to the inner wall of the water tank 511. A squeezing plate 517 is fixedly connected to the front side of the push column 516. The side of the squeezing plate 517 is slidably connected to the inner wall of the water tank 511. The function of the squeezing plate 517 is to push the water in the water tank 511.

[0035] A return spring 518 is fixedly connected to the circumferential surface of the push column 516. The end of the return spring 518 away from the push column 516 is fixedly connected to the back side of the water tank 511. A collection box 519 is slidably connected inside the test cabinet 1. The function of the return spring 518 is to allow the push column 516 to reset when the push plate 59 stops pushing it. The function of the collection box 519 is to collect the water after cooling the cable.

[0036] The circumferential surface of bevel gear 51 meshes with the circumferential surface of bevel gear 54, and the circumferential surface of drive gear 55 meshes with the side surface of rack 58. The back side of push column 516 is located on the displacement trajectory of push plate 59. The function of the circumferential surface of bevel gear 51 meshing with the circumferential surface of bevel gear 54 is to drive bevel gear 54 to rotate when bevel gear 51 rotates. The function of the circumferential surface of drive gear 55 meshing with the side surface of rack 58 is to drive rack 58 to move when drive gear 55 rotates.

[0037] A specific application of this embodiment is as follows: First, when it is necessary to use this device to test the fire resistance of a cable, the rotating device 4 can be used. The cable is first placed on the base plate 48, then the sliding pressure plate 49 is used. By pressing the first locking block 413 and the second locking block 414, the locking bolt 411 is inserted into the through hole 410 of the base plate 48. Then, the first locking block 413 and the second locking block 414 are released so that the first locking block 413 and the second locking block 414 are reset by the spring spring 415, blocking the through hole 410, thereby clamping the cable. Then, the flame-spraying device 3 is started to spray the cable, and then the motor 4 is started. 1. When the output shaft of motor 41 rotates counterclockwise, it will drive shaft 42 to rotate counterclockwise. When shaft 42 rotates counterclockwise, it will drive sprocket 1 43 to rotate counterclockwise. When sprocket 1 43 rotates counterclockwise, it will drive chain 44 to rotate counterclockwise. When chain 44 rotates counterclockwise, it will drive sprocket 2 45 to rotate counterclockwise. When sprocket 2 45 rotates counterclockwise, it will drive rod 46 to rotate counterclockwise. When rod 46 rotates counterclockwise, it will drive base plate 48 and pressure plate 49 to rotate counterclockwise. This will drive the cable between base plate 48 and pressure plate 49 to rotate, thus enabling comprehensive testing of the cable.

[0038] The rotation of the shaft 42 drives the water cooling device 5. After the cable test is completed, the water cooling device 5 can be used to cool the cable to prevent burns when the staff handles it. When the shaft 42 rotates clockwise, it drives the first bevel gear 51 to rotate clockwise. When the first bevel gear 51 rotates clockwise, it drives the second bevel gear 54 to rotate counterclockwise. When the second bevel gear 54 rotates counterclockwise, it drives the rotating shaft 53 to rotate counterclockwise. When the rotating shaft 53 rotates counterclockwise, it drives the drive gear 55 to rotate counterclockwise. When the drive gear 55 rotates counterclockwise, it pushes the rack 58 to move forward. When the rack 58 moves forward, it pushes the push column 516 to move into the water tank 511. When the push column 516 moves into the water tank 511, it drives the squeezing plate 517 to squeeze the water in the water tank 511, so that the water in the water tank 511 enters the nozzle 514 from the outlet 512 along the water pipe 513, and is then sprayed out by the nozzle 514 to cool the cable.

[0039] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An electrical power cable fire resistance testing apparatus comprising a test cabinet (1), characterised in that: The positive side of the test cabinet (1) is rotatably connected with a cabinet door (2), the inside of the test cabinet (1) is provided with a fire spraying device (3), and the side of the test cabinet (1) is provided with a rotating device (4). The rotating device (4) includes a motor (41), the positive side of the motor (41) is fixedly connected to the back side of the test cabinet (1), the output shaft of the motor (41) is fixedly connected with a rotating shaft (42), the circumferential surface of the rotating shaft (42) is fixedly penetrated with a chain wheel one (43), the circumferential surface of the chain wheel one (43) is provided with a chain (44), the inner wall of the chain (44) is provided with a chain wheel two (45), the side of the chain wheel two (45) is fixedly penetrated with a rotating rod (46), the circumferential surface of the rotating rod (46) penetrates the side of the test cabinet (1), the circumferential surface of the rotating rod (46) is rotatably connected to the inner wall of the test cabinet (1), the side of the test cabinet (1) is fixedly connected with a support plate (47), the side of the rotating rod (46) is rotatably connected to the side of the support plate (47), the side of the rotating rod (46) is fixedly connected with a bottom plate (48), the side of the rotating rod (46) is slidably connected with a pressing plate (49), the top of the pressing plate (49) is provided with a through hole (410), the through hole (410) penetrates the bottom of the bottom plate (48), and the inner wall of the through hole (410) is slidably connected with a clamping bolt (411).

2. The electrical cable fire resistance testing apparatus of claim 1, wherein, The inside of the clamping bolt (411) is provided with a sliding groove (412), the inner wall of the sliding groove (412) is slidably connected with a first clamping block (413), the inner wall of the sliding groove (412) is slidably connected with a second clamping block (414), the positive side of the first clamping block (413) is fixedly connected with a resilient spring (415), one end of the resilient spring (415) away from the first clamping block (413) is fixedly connected to the back side of the second clamping block (414), and the side of the bottom plate (48) is fixedly connected with a connecting strip (416).

3. The power cable fire resistance testing apparatus of claim 1, wherein, The circumferential surface of the chain wheel one (43) is engaged with the inner wall of the chain (44), the inner wall of the chain (44) is engaged with the circumferential surface of the chain wheel two (45), the number of the rotating rod (46), the bottom plate (48), the pressing plate (49), the through hole (410), the clamping bolt (411), the sliding groove (412), the first clamping block (413), the second clamping block (414) and the resilient spring (415) is two respectively, and they are mutually symmetrical along the vertical central axis of the test cabinet (1).

4. The electrical cable fire resistance testing apparatus of claim 1, wherein, The test cabinet (1) is externally provided with a water cooling device (5), the water cooling device (5) includes a bevel gear (51), the circumferential surface of the bevel gear (51) is fixedly penetrated in the circumferential surface of the rotating shaft (42), the back side of the test cabinet (1) is fixedly connected with a fixed plate (52), the bottom of the fixed plate (52) is rotatably connected with a rotating shaft (53), the bottom of the rotating shaft (53) is fixedly connected with a bevel gear (54), the top of the rotating shaft (53) is fixedly connected with a drive gear (55), the back side of the test cabinet (1) is provided with a sliding groove (56), the back side of the test cabinet (1) is fixedly connected with a sliding plate (57), the top of the sliding plate (57) is slidably connected with a rack (58), the side of the rack (58) is fixedly connected with a push plate (59), the top of the test cabinet (1) is provided with a storage groove (510), the inside of the storage groove (510) is slidably connected with a water tank (511), the bottom of the water tank (511) is provided with a water outlet (512), the inner wall of the water outlet (512) is fixedly connected with a water pipe (513), one end of the water pipe (513) is fixedly connected with a spray head (514).

5. The power cable fire resistance testing apparatus of claim 4, wherein, The back side of the test cabinet (1) is provided with a movable opening (515), the back side of the water tank (511) is penetrated through a push column (516), the circumferential surface of the push column (516) is slidably connected with the inner wall of the water tank (511), the front side of the push column (516) is fixedly connected with a squeezing plate (517), the side of the squeezing plate (517) is slidably connected with the inner wall of the water tank (511).

6. The electrical cable fire resistance testing apparatus of claim 5, wherein, The circumferential surface of the push column (516) is fixedly connected with a return spring (518), one end of the return spring (518) away from the push column (516) is fixedly connected with the back side of the water tank (511), the inside of the test cabinet (1) is slidably connected with a collection box (519).

7. The power cable fire resistance testing apparatus of claim 5, wherein, The circumferential surface of the bevel gear (51) is engaged with the circumferential surface of the bevel gear (54), the circumferential surface of the drive gear (55) is engaged with the side of the rack (58), and the back side of the push column (516) is located on the displacement track of the push plate (59).

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