Cable jacket heat aging test apparatus

Abstract

The utility model relates to cable sheath thermal aging test technical field discloses cable sheath thermal aging test equipment, including test round box, the inside fixedly connected with compatible baffle of test round box, the inside of baffle is divided into detection chamber and equipment room from below to above of test round box, the inside rotatory mounting has the pivot of detection chamber, is set up and is fixedly installed with two mounting rings on the pivot, the outer wall equally distant of mounting ring is provided with four fixed links, and the fixed link is close to the side of mounting ring and is equipped with the limit slot, the utility model discloses through the cooperation of cross axis, hook pole, connecting shaft, limit slot, mounting ring, limiting rod and spring, can pull out fixed link from detection chamber, need not reach the hand to detection chamber also can complete the installation of cable sheath, prevent the test temperature from being too high and cause the scald of user's hand, increase the security of use.

Description

Technical Field

[0001] This utility model relates to the field of cable sheath thermal aging testing technology, specifically to cable sheath thermal aging testing equipment. Background Technology

[0002] The cable sheath is the outermost protective structure of a cable. Its main function is to protect the internal conductor and insulation layer from damage caused by external physical, chemical, and environmental factors. Its structure can be divided into an inner sheath (such as rubber or plastic) and an outer sheath (such as metal or composite sheath). Some cables are also equipped with protective tubes. The heat aging resistance of the cable sheath directly determines the performance of the cable. Therefore, heat aging testing equipment is required to test the cable sheath before the cable leaves the factory.

[0003] The published patent document CN208937520U discloses a thermal aging test device for cable sheath materials. This patent document features a cable limiting mechanism at the bottom of the test chamber to secure the cable. A heating wire from a heater heats the inside of the test chamber, while a fan assembly blows air into the chamber. The cable, fixed to the clips, is tested at the specified temperature. Both the main chamber and the test chamber are made of heat-insulating glass, and the inner wall of the main chamber is equipped with lighting to facilitate real-time observation of cable changes. However, the aforementioned patent document requires hands to be inserted into the test chamber to install the cable sheath, which could result in burns due to excessively high test temperatures, posing a safety risk. Utility Model Content

[0004] The purpose of this invention is to provide a cable sheath thermal aging test device, which solves the problems mentioned in the background art.

[0005] This application provides a cable sheath thermal aging test device, including a test chamber. A matching partition is fixedly connected inside the test chamber, dividing the interior of the test chamber into a testing chamber and an equipment chamber from bottom to top. A rotating shaft is rotatably mounted inside the testing chamber. Two mounting rings are sleeved and fixedly mounted on the rotating shaft. Four fixing rods are equidistantly arranged on the outer wall of the mounting rings. A connecting shaft is fixedly installed between two vertical fixing rods. A limiting groove is formed on the side of the fixing rod near the mounting ring, and several sheath holes are formed on the fixing rod. A limiting rod is slidably connected inside the limiting groove. One end of the limiting rod outside the limiting groove is fixedly connected to the mounting ring, and two springs are fixedly connected to the other end of the limiting rod. One end of the spring is fixedly connected to the inner wall of the limiting groove. A horizontal shaft is fixedly mounted on the outer wall of the test chamber, and a hook rod is provided on the horizontal shaft.

[0006] Optionally, an exhaust pipe and a return pipe are respectively connected through and interference-fitted on the partition. An electric heating box and a fan are fixedly installed inside the equipment room. The air inlet of the electric heating box is connected to the upper end of the return pipe, and the exhaust end of the electric heating box is connected to the air inlet of the fan. The upper end of the exhaust pipe is connected to the exhaust end of the fan, and several blowpipes are equidistantly connected to one side of the exhaust pipe inside the testing room.

[0007] Optionally, a servo motor is fixedly installed on the top of the partition, and the output end of the servo motor is fixedly installed on the upper end of the rotating shaft.

[0008] Optionally, a matching door is hinged to one side of the outer wall of the test chamber.

[0009] Optionally, the door is equipped with double-layered vacuum glass.

[0010] Optionally, four legs are fixedly connected at equal intervals along the outer edge of the bottom of the test box, and the lower end of each leg is provided with an anti-slip pad.

[0011] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:

[0012] 1. The technical solution of this application uses the cooperation of the horizontal shaft, hook rod, connecting shaft, limiting groove, mounting ring, limiting rod and spring to pull the fixing rod out of the test chamber. The cable sheath can be installed without putting your hand into the test chamber, which prevents the user's hand from being burned by excessive test temperature and increases the safety of use.

[0013] 2. The technical solution of this application achieves hot air circulation through the coordinated use of partitions, exhaust pipes, blow pipes, return pipes, electric heating boxes and fans, ensuring that the temperature is the same in all positions of the testing chamber. Furthermore, the servo motor, rotating shaft and mounting ring can simultaneously rotate the fixed cable sheath, further ensuring that the temperature is the same in all positions of the testing chamber and preventing inaccurate testing caused by local temperature differences. Attached Figure Description

[0014] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the installation structure of the fixing rod and the mounting ring of this utility model;

[0017] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This is a cross-sectional view of the main view of this utility model.

[0019] In the diagram: 1. Test chamber; 2. Rotating shaft; 3. Mounting ring; 4. Fixing rod; 5. Connecting shaft; 6. Horizontal shaft; 7. Hook rod; 8. Chamber door; 9. Double-layer vacuum glass; 10. Support leg; 11. Limiting rod; 12. Limiting groove; 13. Spring; 14. Sheath hole; 15. Partition; 16. Testing chamber; 17. Equipment chamber; 18. Exhaust pipe; 19. Return pipe; 20. Electric heating box; 21. Fan; 22. Blowpipe; 23. Servo motor. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] Please see Figure 1-4 This utility model provides a cable sheath thermal aging test device, including a test chamber 1. The test chamber 1 has a matching partition 15 fixedly connected inside. The partition 15 divides the interior of the test chamber 1 into a test chamber 16 and an equipment chamber 17 from bottom to top. A rotating shaft 2 is rotatably installed inside the test chamber 16. Two mounting rings 3 are sleeved and fixedly installed on the rotating shaft 2. Four fixing rods 4 are equidistantly arranged on the outer wall of the mounting rings 3. A connecting shaft 5 is fixedly installed between two vertical fixing rods 4. A limiting groove 12 is opened on the side of the fixing rod 4 near the mounting ring 3, and several sheath holes 14 are opened on the fixing rod 4. A limiting rod 11 is slidably connected inside the limiting groove 12. One end of the limiting rod 11 outside the limiting groove 12 is fixedly connected to the mounting ring 3, and two springs 13 are fixedly connected to the other end of the limiting rod 11. One end of the spring 13 is fixedly connected to the inner wall of the limiting groove 12. A horizontal shaft 6 is fixedly installed on the outer wall of the test chamber 1, and a hook rod 7 is provided on the horizontal shaft 6.

[0022] In this technical solution, by removing the hook rod 7 from the horizontal axis 6 and hooking the hook rod 7 onto the connecting shaft 5, the corresponding fixing rod 4 is pulled out from the testing chamber 16. Then, the cable sheath is wrapped around the sheath hole 14 of the fixing rod 4. The fixing rod 4 is reset by the limiting action of the limiting groove 12 and the limiting rod 11 and the elastic force of the spring 13. The installation of the cable sheath can be completed without reaching into the testing chamber 16, preventing burns to the user's hands due to excessively high test temperature and increasing the safety of use.

[0023] In some technical solutions, such as Figure 4As shown, an exhaust pipe 18 and a return pipe 19 are respectively connected through and interference-fitted on the partition 15. An electric heating box 20 and a fan 21 are fixedly installed inside the equipment room 17. The air inlet of the electric heating box 20 is connected to the upper end of the return pipe 19, and the exhaust end of the electric heating box 20 is connected to the air inlet of the fan 21. The upper end of the exhaust pipe 18 is connected to the exhaust end of the fan 21, and several blowpipes 22 are equidistantly connected to one side of the exhaust pipe 18 inside the testing chamber 16.

[0024] In use, the fan 21 can deliver the air in the test chamber 16 to the electric heating box 20 through the return pipe 19 for heating. The heated air then enters the test chamber 16 through the exhaust pipe 18 and the blow pipe 22 to achieve hot air circulation, ensuring that the temperature is the same in all positions of the test chamber 16 and preventing inaccurate testing caused by local temperature differences.

[0025] In some technical solutions, such as Figure 1 and Figure 4 As shown, a servo motor 23 is fixedly installed on the top of the partition 15, and the output end of the servo motor 23 is fixedly installed on the upper end of the rotating shaft 2.

[0026] In use, the servo motor 23 drives the rotating shaft 2 to rotate, which in turn drives the cable sheath fixed on the fixed rod 4 to rotate inside the testing chamber 16, further ensuring that the temperature is the same at all positions in the testing chamber 16.

[0027] In some technical solutions, such as Figure 1 As shown, a matching door 8 is hinged to one side of the outer wall of the test box 1.

[0028] During use, the opening and closing of the round box 1 can be easily tested through the box door 8, facilitating loading and unloading.

[0029] In some technical solutions, such as Figure 1 As shown, the door 8 is equipped with double-layered vacuum glass 9.

[0030] During use, the inside of the testing chamber 16 can be observed through the double-layered vacuum glass 9 without opening the chamber door 8.

[0031] In some technical solutions, such as Figure 1 As shown, four legs 10 are fixedly connected at equal intervals along the outer edge of the bottom of the test box 1, and anti-slip pads are provided at the lower end of the legs 10.

[0032] When in use, the anti-slip pads at the bottom of the support legs 10 increase the stability of the test equipment.

[0033] Working principle: During use, the hook rod 7 is removed from the horizontal shaft 6 and hooked onto the connecting shaft 5. The corresponding fixing rod 4 is pulled out from the detection chamber 16, and the cable sheath is wrapped around the sheath hole 14 of the fixing rod 4. The fixing rod 4 is reset by the limiting action of the limiting groove 12 and the limiting rod 11 and the elastic force of the spring 13. The installation of the cable sheath can be completed without reaching into the detection chamber 16. The fan 21 delivers the air in the detection chamber 16 to the electric heating box 20 through the return pipe 19 for heating. The heated air then enters the detection chamber 16 through the exhaust pipe 18 and the blow pipe 22 to achieve hot air circulation and ensure that the temperature is the same at all positions in the detection chamber 16. At the same time, the servo motor 23 drives the rotating shaft 2 to rotate, which drives the cable sheath fixed on the fixing rod 4 to rotate in the detection chamber 16, further ensuring that the temperature is the same at all positions in the detection chamber 16.

[0034] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A cable sheath thermal aging test device, comprising a test chamber (1), characterized in that: The test chamber (1) is fixedly connected to a matching partition (15), which divides the interior of the test chamber (1) into a test chamber (16) and an equipment chamber (17) from bottom to top. A rotating shaft (2) is rotatably installed inside the test chamber (16). Two mounting rings (3) are sleeved and fixedly installed on the rotating shaft (2). Four fixing rods (4) are equidistantly arranged on the outer wall of the mounting rings (3). A connecting shaft (5) is fixedly installed between two vertical fixing rods (4). One of the fixing rods (4) is close to the mounting ring (3). A limiting groove (12) is opened on the side, and a number of protective sleeve holes (14) are opened on the fixing rod (4). A limiting rod (11) is slidably connected inside the limiting groove (12). One end of the limiting rod (11) outside the limiting groove (12) is fixedly connected to the mounting ring (3), and the other end of the limiting rod (11) is fixedly connected to two springs (13). One end of the spring (13) is fixedly connected to the inner wall of the limiting groove (12). A horizontal shaft (6) is fixedly installed on the outer wall of the test box (1), and a hook rod (7) is provided on the horizontal shaft (6).

2. The cable sheath thermal aging test equipment according to claim 1, characterized in that, The partition (15) is respectively connected by an exhaust pipe (18) and a return pipe (19) through and with an interference fit. The equipment room (17) is fixedly installed with an electric heating box (20) and a fan (21). The air inlet of the electric heating box (20) is connected to the upper end of the return pipe (19), and the exhaust end of the electric heating box (20) is connected to the air inlet of the fan (21). The upper end of the exhaust pipe (18) is connected to the exhaust end of the fan (21), and the exhaust pipe (18) is connected to several blowpipes (22) at equal intervals on one side inside the detection chamber (16).

3. The cable sheath thermal aging test equipment according to claim 1, characterized in that, A servo motor (23) is fixedly installed on the top of the partition (15), and the output end of the servo motor (23) is fixedly installed on the upper end of the rotating shaft (2).

4. The cable sheath thermal aging test equipment according to claim 1, characterized in that, The outer wall of the test box (1) is hinged to a matching box door (8).

5. The cable sheath thermal aging test equipment according to claim 4, characterized in that, The door (8) is equipped with double-layered vacuum glass (9).

6. The cable sheath thermal aging test equipment according to claim 1, characterized in that, The test box (1) has four legs (10) fixedly connected at equal intervals along the outer edge of its bottom, and the lower end of each leg (10) is provided with an anti-slip pad.

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