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CN-224203144-U - Fire-resistant test device for electric wires and cables

CN224203144UCN 224203144 UCN224203144 UCN 224203144UCN-224203144-U

Abstract

The utility model relates to the technical field of test devices and discloses a wire and cable fire resistance test device which comprises a bottom plate, wherein a temporary storage assembly and two support posts are connected to the upper surface of the bottom plate, a reversing mechanism is connected between the two support posts, the output end of the reversing mechanism is connected with two connecting rings, the outer walls of the two connecting rings are connected with two rotating assemblies, and the other ends of the two rotating assemblies are connected with a first elastic assembly and a second elastic assembly. The wire and cable fire resistance test device can rotate the tested wire and cable to the temporary storage assembly for temporary storage after the wire and cable are subjected to high-temperature combustion test, so that the subsequent combustion test can be continued, meanwhile, the temporary storage of the wire and cable cooling data can be monitored, two purposes are achieved, when the wire and cable are required to be controlled to rotate, the reversing mechanism is only required to be started, the reversing can be automatically realized, the direction is rapid, and the wire and cable required to be subjected to the combustion test can be placed in the paying-off assembly more conveniently and rapidly.

Inventors

  • CHEN PENG
  • ZHOU PENG
  • Yu zizhu
  • HU SONG
  • XIA YUNBO
  • Liang Kangjie
  • FENG ZHENG

Assignees

  • 中交西南城市开发有限公司

Dates

Publication Date
20260505
Application Date
20250319

Claims (9)

  1. 1. The wire and cable fire resistance test device comprises a bottom plate (1) and is characterized in that a temporary storage assembly and two support posts (2) are connected to the upper surface of the bottom plate (1), a reversing mechanism is connected between the two support posts (2), two connecting rings (5) are connected to the output end of the reversing mechanism, two rotating assemblies are connected to the outer wall of each connecting ring (5), a first elastic assembly and a second elastic assembly are connected to the other ends of the rotating assemblies, a paying-off assembly is connected to the other ends of the first elastic assembly and the second elastic assembly at the same time, and the temporary storage assembly is matched with the paying-off assembly.
  2. 2. The wire and cable fire resistance test device according to claim 1, wherein the temporary storage assembly comprises a support (11) and a plurality of temporary storage semi-rings (12), the lower end of the support (11) is fixedly connected with the upper surface of the bottom plate (1), the upper end of the support (11) is fixedly connected with the plurality of temporary storage semi-rings (12), the plurality of temporary storage semi-rings (12) are arranged in parallel, and the pay-off assembly is matched with the plurality of temporary storage semi-rings (12).
  3. 3. The wire and cable fire resistance test device according to claim 1, wherein the reversing mechanism comprises a rotating motor (3) and a transmission rod (4), the outer wall of the rotating motor (3) is fixedly connected with the side wall of the upper end of one of the support posts (2), an output shaft of the rotating motor (3) is fixedly connected with one end of the transmission rod (4), the other end of the transmission rod (4) penetrates through the two support posts (2) and the two connecting rings (5), the outer wall of the transmission rod (4) is rotatably connected with the inner wall of the penetrating position of the two support posts (2), and the outer wall of the transmission rod (4) is fixedly connected with the inner wall of the penetrating position of the two connecting rings (5).
  4. 4. The wire and cable fire resistance test device according to claim 2, wherein the rotating assembly comprises a connecting rod (6) and two connecting strips (18), one end of the connecting rod (6) is fixedly connected with the outer wall of the connecting ring (5), one end of each connecting strip (18) is fixedly connected with the side wall of the connecting rod (6), the two connecting strips (18) are respectively positioned at two ends of the connecting rod (6), the two connecting strips (18) are arranged up and down at the same time, one end of the connecting rod (6) far away from the connecting ring (5) is connected with the paying-off assembly, and the two connecting strips (18) are respectively connected with the first elastic assembly and the second elastic assembly.
  5. 5. The wire and cable fire resistance test device according to claim 4, wherein the paying-off assembly comprises a fixed block (7), a movable block (8) and a movable half ring (9), wherein a circle is formed inside the fixed block (7), the movable block (8) and the movable half ring (9), the side wall of the fixed block (7) is fixedly connected with one end, far away from the connecting ring (5), of the connecting rod (6), the upper surface of the movable block (8) is abutted against the bottom surface of the fixed block (7), the upper surface of the movable block (8) is further connected with the connecting rod (6), one end, far away from the connecting rod (18), of the first elastic component is connected with one end, far away from the connecting rod (18), of the second elastic component is connected with the lower end of the movable block (8).
  6. 6. The wire and cable fire resistance test device according to claim 5, wherein the elastic component comprises a rod (14) and a spring (15), one end of the rod (14) is fixedly connected with one end of the movable semi-ring (9) close to the fixed block (7), the other end of the rod (14) penetrates through the fixed block (7), the spring (15) and one connecting strip (18), the outer wall of the rod (14) is in sliding connection with the inner wall of the penetrating part of the fixed block (7) and the connecting strip (18), and two ends of the spring (15) are fixedly connected with the fixed block (7) and the connecting strip (18) respectively.
  7. 7. The wire and cable fire resistance test device according to claim 5, wherein the second elastic component comprises a second rod (16) and a second spring (17), one end of the second rod (16) is fixedly connected with the side wall of the movable block (8) far away from one end of the fixed block (7), the other end of the second rod (16) penetrates through the second spring (17) and the second connecting strip (18), the outer wall of the second rod (16) is in sliding connection with the inner wall of the connecting strip (18), and two ends of the second spring (17) are fixedly connected with the movable block (8) and the connecting strip (18) respectively.
  8. 8. The wire and cable fire resistance test device according to claim 5, wherein the side wall of the connecting rod (6) is provided with a sliding groove (20), one side of the moving block (8) close to the fixed block (7) is fixedly connected with a sliding block (19), and the outer wall of the sliding block (19) is in sliding connection with the inner wall of the sliding groove (20).
  9. 9. The wire and cable fire resistance test device according to claim 5, wherein the moving block (8) and the moving semi-ring (9) are fixedly connected with a first magnet (10) on two sides of one end far away from each other, four second magnets (13) are fixedly connected to the upper surface of the support (11), short strips (21) are fixedly connected to one sides, close to the support (11), of the two support columns (2), T-shaped strips (22) are fixedly connected to the upper surface of the bottom plate (1), other four second magnets (13) are fixedly connected to one end, adjacent to the two short strips (21), of the two ends of the T-shaped strips (22), and a plurality of first magnets (10) are attracted with a plurality of second magnets (13) respectively.

Description

Fire-resistant test device for electric wires and cables Technical Field The utility model relates to the technical field of test devices, in particular to a wire and cable fire resistance test device. Background The fire resistance test of the electric wires and cables refers to a test carried out on electric wires and cables products, and aims to evaluate the performance and the safety of the electric wires and cables under fire conditions, and the test is used for verifying whether the electric wires and cables can maintain the circuit integrity for a certain time under high-temperature flame conditions, ensuring that key circuits (such as an alarm system, emergency lighting and the like) can still work normally when the fire occurs, thereby ensuring the safety of personnel and reducing property loss. The patent with the publication number of CN214750058U discloses an automatic detection and alarm system for wire and cable fire resistance test, which comprises a sample support frame, a blast burner, a fire source control system, a loop control system and a PLC control system, wherein the blast burner is connected with the fire source control system through a gas pipeline, a tested cable sample is connected with the loop control system to form an electrified loop, and the fire source control system and the loop control system are respectively connected with the PLC control system. The automatic detection and alarm system for the fire resistance property test of the electric wire and the cable can realize automatic adjustment and real-time monitoring of test parameters, automatic recording and storage of test results, and can automatically alarm unqualified cable samples, timely cut off a power supply and extinguish torch flames, so that the detection efficiency is improved, meanwhile, the influence of human factors is reduced, and the safety of detection equipment and the test process is ensured on the basis of improving the accuracy of the detection results. However, the test device still has the following problems in the actual use process: In the fire resistance test of the electric wire and cable, it usually needs to burn for 90 minutes or longer, and after the test is finished, some standards even need to record the cooling time and temperature change process, but under the condition that the electric wire and cable burns with the flame before, the electric wire and cable resists high-temperature combustion, but the surface temperature of the electric wire and cable is usually very high, so that the electric wire and cable needs to be cooled for a long time, and the test equipment is occupied during the period of cooling, so that the subsequent test cannot be performed, and the efficiency is low. Disclosure of utility model Aiming at the defects of the prior art, the utility model provides the wire and cable fire resistance test device which can automatically rotate the wire and cable to one side for temporary storage after the fire resistance test of the first wire and cable, and does not occupy the whole space. The wire and cable fire resistance test device comprises a bottom plate, wherein a temporary storage assembly and two support posts are connected to the upper surface of the bottom plate, a reversing mechanism is connected between the two support posts, the output end of the reversing mechanism is connected with two connecting rings, the outer walls of the two connecting rings are connected with two rotating assemblies, the other ends of the two rotating assemblies are connected with a first elastic assembly and a second elastic assembly, the other ends of the first elastic assembly and the second elastic assembly are simultaneously connected with a paying-off assembly, and the temporary storage assembly is matched and aligned with the paying-off assembly. Further, the temporary storage assembly comprises a support and a plurality of temporary storage semi-rings, the lower end of the support is fixedly connected with the upper surface of the bottom plate, the upper end of the support is fixedly connected with the plurality of temporary storage semi-rings, the plurality of temporary storage semi-rings are arranged in parallel, and the paying-off assembly is matched with the plurality of temporary storage semi-rings. Further, the reversing mechanism comprises a rotating motor and a transmission rod, the outer wall of the rotating motor is fixedly connected with the side wall of the upper end of one of the support posts, the output shaft of the rotating motor is fixedly connected with one end of the transmission rod, the other end of the transmission rod penetrates through the two support posts and the two connecting rings, the outer wall of the transmission rod is rotationally connected with the inner wall of the penetrating part of the two support posts, and the outer wall of the transmission rod is fixedly connected with the inner wall of the penetrating part of the two connecting rings. Fur