A high polymer cable material anti-cracking test device

Abstract

The utility model discloses a kind of high molecular cable material anti-cracking test devices, including support platform, the upper portion of the support platform is fixedly connected with box, the inside front of the box is fixedly connected with temperature and humidity table, the inside of the box is provided with stretching device, the front of the box is rotatably connected with rotating frame, the inside of the rotating frame is fixedly connected with isolation plate, the upper portion of the box is provided with air supply device, the upper portion left side of the box is provided with air outlet, the rear of the box is fixedly connected with semiconductor refrigerating sheet, the rear of the semiconductor refrigerating sheet is fixedly connected with heat sink, the lower portion of the support platform is fixedly connected with humidifier, the upper portion of the humidifier is fixedly connected with connecting pipe. Through the above structure, cable material can be experimented under high temperature and low temperature environment;Cable material can be experimented under different humidity, so that the anti-cracking degree of cable material under different environments can be better reflected.

Description

Technical Field

[0001] This utility model relates to the field of cable testing technology, and in particular to a crack resistance testing device for polymer cable materials. Background Technology

[0002] Cables are power or signal transmission cables composed of a conductor, insulation layer, sheath, and optional shielding layer. They are classified by voltage level into low-voltage, medium-voltage, and high-voltage, and by application into power, control, communication, and special cables. Their core performance characteristics include electrical safety, mechanical strength, environmental resistance, and certification standards.

[0003] 1. In the existing technology, some experimental devices only consider the impact of high temperature on the cable material during actual use, but do not consider the impact of low temperature on the cracking process of the cable material during actual use. This makes the overall experimental process relatively one-sided and cannot reflect the crack resistance of the cable material at different temperatures.

[0004] 2. During actual use, cable materials may encounter relatively humid environments such as rainy days or snowy days. Humid air can also have a certain impact on the cracking of cable materials. Some experimental devices can only test cable materials under a single humidity condition during the experiment. Utility Model Content

[0005] The purpose of this invention is to provide a crack resistance testing device for polymer cable materials, which can test the cable materials under high temperature and low temperature environments; it can also test the cable materials under different humidity levels, thereby better reflecting the crack resistance of the cable materials under different environments.

[0006] To achieve the above objectives, a crack resistance testing device for polymer cable materials is provided, comprising a support platform, a housing fixedly connected above the support platform, a temperature and humidity meter fixedly connected to the front of the housing, a tensioning device installed inside the housing, a rotating frame rotatably connected to the front of the housing, an isolation plate fixedly connected inside the rotating frame, an air supply device installed above the housing, and an air outlet installed on the upper left side of the housing.

[0007] A semiconductor cooling chip is fixedly connected to the rear of the housing, and a heat sink is fixedly connected to the rear of the semiconductor cooling chip. A humidifier is fixedly connected to the bottom of the support platform, and a connecting pipe is fixedly connected to the top of the humidifier. A first fan is fixedly connected to the rear of the interior of the housing.

[0008] According to the aforementioned polymer cable material crack resistance testing device, the tensile device includes a frame, a drive motor is fixedly connected to the lower right side of the frame, a bidirectional lead screw is fixedly connected to the output end of the drive motor, movable plates are threadedly connected to the left and right sides of the bidirectional lead screw, a slider is slidably connected above the left movable plate, a clamping frame is fixedly connected to the right side of the slider, a synchronizing rod is fixedly connected to the front and rear sides of the clamping frame, a buffer spring is fixedly connected to the front and rear sides of the clamping frame, a baffle is fixedly connected to the left side of the slider, threaded rotating rods are rotatably connected to the front and rear sides of the clamping frame, a gripper is threadedly connected to the middle of the threaded rotating rod, and an anti-slip groove is fixedly connected to the middle of the gripper. The frame is located inside the housing and is fixedly connected to the housing.

[0009] According to the aforementioned polymer cable material crack resistance testing device, the synchronizing rod is slidably connected to the moving plate, the synchronizing rod is fixedly connected to the baffle, the other end of the buffer spring is fixedly connected to the moving plate, and the gripper is slidably connected to the clamping frame.

[0010] According to the aforementioned polymer cable material crack resistance testing device, the movable plate is located inside the frame, and the movable plate is slidably connected to the frame.

[0011] According to the aforementioned polymer cable material crack resistance testing device, the air supply device includes a connecting frame, an air supply frame is fixedly connected to the lower part of the connecting frame, a heating pipe is fixedly connected to the lower part of the inner side of the connecting frame, a second fan is fixedly connected to the middle part of the inner side of the connecting frame, and an air inlet mesh is fixedly connected to the upper part of the inner side of the connecting frame.

[0012] According to the aforementioned polymer cable material crack resistance testing device, the lower opening of the air supply frame corresponds to the cooling end of the semiconductor refrigeration chip, and the connecting frame is fixedly connected to the housing.

[0013] According to the aforementioned polymer cable material crack resistance testing device, the connecting pipe is located at the rear of the box and is connected to the box.

[0014] According to the aforementioned polymer cable material crack resistance testing device, the connecting pipe is located behind the first fan, and the upper opening of the connecting pipe corresponds to the first fan.

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

[0016] 1. Compared with existing technologies, when the second fan is turned on, the heating element is turned off, and the thermoelectric cooler is turned on, the second fan blows air from the cooling end of the thermoelectric cooler. Through the combined action of the fan and the thermoelectric cooler, cold air is generated. This cold air enters the chamber, lowering the internal temperature and providing the necessary experimental environment for low-temperature experiments. When the second fan is turned on, the heating element is turned on, and the thermoelectric cooler is turned off, hot air is drawn into the chamber by the second fan and the heating element, raising the overall internal temperature and providing the necessary experimental environment for high-temperature experiments. This allows for the testing of cable materials under both high and low temperature conditions.

[0017] 2. Compared with existing technologies, this method incorporates a humidifier and a primary fan, with a connecting pipe fixedly connected to the top of the humidifier at the rear of the enclosure. This connection allows the humidifier, driven by the primary fan, to introduce water mist into the enclosure, increasing internal humidity. This humidification process enables researchers to understand the impact of different humidity levels on the crack resistance of cable materials and to conduct experiments on cable materials under varying humidity conditions. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is a perspective view of a polymer cable material crack resistance testing device according to the present invention;

[0020] Figure 2 This is a cross-sectional view of the connecting pipe of a polymer cable material crack resistance testing device according to this utility model;

[0021] Figure 3 This is a three-dimensional structural diagram of the tensile device of the polymer cable material crack resistance testing apparatus of this utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the air supply device of the polymer cable material crack resistance test device of this utility model.

[0023] Legend:

[0024] 1. Support platform; 2. Cabinet; 3. Thermometer and hygrometer; 4. Stretching device; 5. Rotating frame; 6. Isolation plate; 7. Air supply device; 8. Air outlet; 9. Semiconductor cooling chip; 10. Heat sink; 11. Humidifier; 12. Connecting pipe; 13. First fan;

[0025] 41. Frame; 42. Drive motor; 43. Two-way lead screw; 44. Moving plate; 45. Slider; 46. Clamping frame; 47. Synchronizing rod; 48. Buffer spring; 49. Baffle; 410. Threaded rotating rod; 411. Gripper; 412. Anti-slip groove; 71. Connecting frame; 72. Air supply frame; 73. Heating tube; 74. Second fan; 75. Air inlet screen. Detailed Implementation

[0026] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0027] Reference Figure 1-4 This utility model discloses a polymer cable material crack resistance testing device, which includes a support platform 1, a box 2 fixedly connected above the support platform 1, a temperature and humidity meter 3 fixedly connected to the front of the inside of the box 2, a tensioning device 4 installed inside the box 2, a rotating frame 5 rotatably connected to the front of the box 2, an isolation plate 6 fixedly connected inside the rotating frame 5, an air supply device 7 installed above the box 2, an air outlet 8 installed on the upper left side of the box 2, a semiconductor cooling chip 9 fixedly connected to the rear of the box 2, a heat sink 10 fixedly connected to the rear of the semiconductor cooling chip 9, a humidifier 11 fixedly connected below the support platform 1, a connecting pipe 12 fixedly connected above the humidifier 11, the connecting pipe 12 being located at the rear of the box 2 and connected to the box 2, a first fan 13 fixedly connected to the rear of the inside of the box 2, the connecting pipe 12 being located behind the first fan 13, and the upper opening of the connecting pipe 12 corresponding to the first fan 13.

[0028] The above structure, by being equipped with a temperature and humidity meter 3, allows the operator to observe the temperature or humidity inside the chamber 2.

[0029] By incorporating a rotating frame 5, with an isolation plate 6 fixedly connected inside, the operator can rotate the frame 5 down during the experiment to observe the process through the isolation plate 6, and also isolate the experiment from the operator. The isolation plate 6, made of tempered glass with a nano-coating on both its front and back sides, prevents fogging during operation.

[0030] By providing a semiconductor cooling chip 9, with its cooling end located inside the housing 2, the cooling surface can be cooled by driving the semiconductor cooling chip 9.

[0031] The system includes a humidifier 11 and a first fan 13, with a connecting pipe 12 fixedly connected to the top of the humidifier 11. The connecting pipe 12 is located at the rear of the housing 2 and is connected to the housing 2. When the humidifier 11 is turned on and driven by the first fan 13, water mist is introduced into the interior of the housing 2, thereby increasing the humidity inside the housing 2. This humidification process allows researchers to understand the impact of high humidity on the crack resistance of cable materials.

[0032] The stretching device 4 includes a frame 41. A drive motor 42 is fixedly connected to the lower right side of the frame 41. A bidirectional lead screw 43 is fixedly connected to the output end of the drive motor 42. Moving plates 44 are threaded to the left and right sides of the bidirectional lead screw 43. The moving plates 44 are located inside the frame 41 and are slidably connected to the frame 41. A slider 45 is slidably connected to the upper side of the left moving plate 44. A clamping frame 46 is fixedly connected to the right side of the slider 45. Synchronizing rods 47 are fixedly connected to the front and rear sides of the clamping frame 46 and are slidably connected to the moving plates 44. Synchronous rod 47 is fixedly connected to baffle 49, the other end of buffer spring 48 is fixedly connected to moving plate 44, gripper 411 is slidably connected to clamping frame 46, buffer spring 48 is fixedly connected to the front and rear sides of clamping frame 46, baffle 49 is fixedly connected to the left side of slider 45, threaded rotating rod 410 is rotatably connected to the front and rear sides of clamping frame 46, gripper 411 is threadedly connected to the middle of threaded rotating rod 410, anti-slip groove 412 is fixedly connected to the middle of gripper 411, frame 41 is located inside box 2, and frame 41 is fixedly connected to box 2.

[0033] The above structure has a threaded rotating rod 410 rotatably connected to the front and rear sides of the clamping frame 46. The middle of the threaded rotating rod 410 is threaded with a jaw 411, and the middle of the jaw 411 is fixedly connected with an anti-slip groove 412. This allows the operator to adjust the position of the jaws 411 on the front and rear sides by rotating the threaded rotating rod 410, so that the jaws 411 clamp one end of the cable. The other end is clamped in the same way, thus completing the clamping and fixing of both ends of the cable.

[0034] Driven by the drive motor 42, the bidirectional lead screw 43 rotates. The left and right sides of the bidirectional lead screw 43 are threaded with moving plates 44, which causes the bidirectional lead screw 43 to move the moving plates 44 on the left and right sides, thereby completing the stretching of the cable and completing the crack resistance test of the cable.

[0035] The air supply device 7 includes a connecting frame 71, an air supply frame 72 is fixedly connected to the lower part of the connecting frame 71, a heating tube 73 is fixedly connected to the lower part of the interior of the connecting frame 71, a second fan 74 is fixedly connected to the middle part of the interior of the connecting frame 71, an air inlet mesh 75 is fixedly connected to the upper part of the interior of the connecting frame 71, the lower opening of the air supply frame 72 corresponds to the cooling end of the semiconductor refrigeration chip 9, and the connecting frame 71 is fixedly connected to the housing 2.

[0036] The aforementioned structure, driven by the second fan 74, allows outside air to enter the interior of chamber 2. When the second fan 74 is turned on, the heating element 73 is turned off, and the thermoelectric cooler 9 is turned on, the second fan 74 blows on the cooling end of the thermoelectric cooler 9, and through the cooperation of the fan and the thermoelectric cooler 9, cold air is generated. The entry of this cold air into the interior of chamber 2 lowers the temperature inside, thus providing the necessary experimental environment for low-temperature experiments.

[0037] When the second fan 74 is turned on, the heating tube 73 is turned on, and the semiconductor cooling chip 9 is turned off, hot air is driven by the second fan 74 and the heating tube 73 to enter the interior of the chamber 2, thereby raising the overall temperature inside the chamber 2 and providing the necessary experimental environment for high-temperature experiments.

[0038] Working principle: When using this polymer cable material crack resistance testing device, first fix both ends of the cable inside the tensile device 4. By controlling the air supply device 7, the semiconductor cooling chip 9 and the humidifier 11, the temperature and humidity inside the chamber 2 are adjusted. After adjustment, turn on the drive motor 42. Under the action of the drive motor 42, the left and right grippers 411 stretch the cable. After recording the test results, the crack resistance tensile test of the cable material is completed.

[0039] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A crack resistance testing device for polymer cable materials, characterized in that, Includes a support platform (1), a box body (2) is fixedly connected above the support platform (1), a temperature and humidity meter (3) is fixedly connected to the front of the inside of the box body (2), a tensioning device (4) is provided inside the box body (2), a rotating frame (5) is rotatably connected to the front of the box body (2), an isolation plate (6) is fixedly connected inside the rotating frame (5), an air supply device (7) is provided above the box body (2), and an air outlet (8) is provided on the upper left side of the box body (2). A semiconductor cooling chip (9) is fixedly connected to the rear of the housing (2), a heat sink (10) is fixedly connected to the rear of the semiconductor cooling chip (9), a humidifier (11) is fixedly connected to the bottom of the support platform (1), a connecting pipe (12) is fixedly connected to the top of the humidifier (11), and a first fan (13) is fixedly connected to the rear of the inside of the housing (2).

2. The polymer cable material crack resistance testing device according to claim 1, characterized in that, The stretching device (4) includes a frame (41), a drive motor (42) is fixedly connected to the lower right side of the frame (41), a bidirectional lead screw (43) is fixedly connected to the output end of the drive motor (42), a moving plate (44) is threaded to the left and right sides of the bidirectional lead screw (43), a slider (45) is slidably connected above the left moving plate (44), a clamping frame (46) is fixedly connected to the right side of the slider (45), and a synchronizing rod (45) is fixedly connected to the front and rear sides of the clamping frame (46). 7) The front and rear sides of the clamping frame (46) are fixedly connected with buffer springs (48), the left side of the slider (45) is fixedly connected with a baffle (49), the front and rear sides of the clamping frame (46) are rotatably connected with threaded rotating rods (410), the middle part of the threaded rotating rod (410) is threadedly connected with a claw (411), the middle part of the claw (411) is fixedly connected with an anti-slip pattern (412), the frame (41) is located inside the box (2), and the frame (41) is fixedly connected to the box (2).

3. The polymer cable material crack resistance testing device according to claim 2, characterized in that, The synchronizing rod (47) is slidably connected to the moving plate (44), the synchronizing rod (47) is fixedly connected to the baffle (49), the other end of the buffer spring (48) is fixedly connected to the moving plate (44), and the gripper (411) is slidably connected to the clamping frame (46).

4. The polymer cable material crack resistance testing device according to claim 2, characterized in that, The movable plate (44) is located inside the frame (41), and the movable plate (44) is slidably connected to the frame (41).

5. The polymer cable material crack resistance testing device according to claim 1, characterized in that, The air supply device (7) includes a connecting frame (71), an air supply frame (72) is fixedly connected to the lower part of the connecting frame (71), a heating pipe (73) is fixedly connected to the lower part of the interior of the connecting frame (71), a second fan (74) is fixedly connected to the middle part of the interior of the connecting frame (71), and an air inlet net (75) is fixedly connected to the upper part of the interior of the connecting frame (71).

6. The polymer cable material crack resistance testing device according to claim 5, characterized in that, The lower opening of the air supply frame (72) corresponds to the cooling end of the semiconductor cooling chip (9), and the connecting frame (71) is fixedly connected to the housing (2).

7. The polymer cable material crack resistance testing device according to claim 1, characterized in that, The connecting pipe (12) is located behind the box (2) and is connected to the box (2).

8. The polymer cable material crack resistance testing device according to claim 1, characterized in that, The connecting pipe (12) is located behind the first fan (13), and the upper opening of the connecting pipe (12) corresponds to the first fan (13).

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