An oil-resistant high-temperature-resistant cable performance testing device

Abstract

The utility model discloses a kind of oil-resistant high-temperature cable performance testing device, it is related to cable performance testing technical field, including test bench, the upper end side of test bench is fixedly installed with fixed platform, the upper end of test bench is slidably installed with sliding platform, fixed mechanism, two fixed mechanisms are respectively installed on fixed platform and sliding platform, by setting fixed mechanism, the two ends of cable are fixed respectively in the upper end of fixed platform and sliding platform, reciprocating mechanism, it is installed in test bench, by setting reciprocating mechanism, sliding platform is driven to reciprocating slide on test bench, drive cable fixed on sliding platform to reciprocating bending, jacking mechanism, it is installed between fixed platform and sliding platform, by setting jacking mechanism, guarantee cable in bending process continuously bending in a direction, solve the mechanical property test problem of the oil-resistant high-temperature cable of existing.

Description

Technical Field

[0001] This utility model relates to the field of cable performance testing technology, specifically to a device for testing the performance of oil-resistant and high-temperature resistant cables. Background Technology

[0002] Oil-resistant and high-temperature-resistant cables are specifically designed for use in harsh environments. They possess excellent oil and high-temperature resistance and are widely used in industries such as petroleum, chemical, metallurgy, and mining. The main characteristics of these cables are their ability to maintain good electrical and mechanical properties at high temperatures and to maintain structural stability even under corrosive media such as oils and chemicals. Oil resistance is achieved through specific materials and processes that ensure the cable's outer sheath and insulation layers will not swell, age, or crack due to oil corrosion. High-temperature resistance is achieved by selecting high-temperature-resistant materials, enabling the cable to operate for extended periods at temperatures as high as 90°C, 105°C, or even higher without insulation damage, decreased electrical performance, or loss of mechanical strength. These cables effectively maintain their normal transmission function even under prolonged contact with high temperatures and chemicals such as oil mist and liquids. The widespread application of oil-resistant and high-temperature-resistant cables significantly improves the safety and reliability of equipment in harsh environments, making them widely used in the automotive, aviation, railway, chemical production lines, and oil drilling industries.

[0003] After the production of oil-resistant and high-temperature resistant cables is completed, a series of routine tests are usually conducted to ensure that they meet standards and technical requirements. These tests include, but are not limited to, oil resistance tests, high-temperature resistance tests, electrical performance tests, and visual inspections, but comprehensive mechanical tests are generally not performed. This is mainly because the outer sheath and insulation layer of oil-resistant and high-temperature resistant cables are made of materials with high strength, wear resistance, and aging resistance. However, cables often experience various mechanical pressures during operation, especially in confined spaces or complex layouts, where cables need to be frequently bent or stretched. Cables installed in equipment also require long-term bending at a single angle. To ensure that oil-resistant and high-temperature resistant cables maintain their performance during long-term bending, a performance testing device for oil-resistant and high-temperature resistant cables is provided. Utility Model Content

[0004] The purpose of this invention is to provide a testing device for the performance of oil-resistant and high-temperature resistant cables, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a test device for testing the performance of oil-resistant and high-temperature resistant cables, including a test platform, a fixed platform fixedly installed on one side of the upper end of the test platform, and a sliding platform slidably installed on the upper end of the test platform; The fixing mechanism consists of two parts, one mounted on the fixing platform and the other on the sliding platform, used to fix both ends of the cable. The reciprocating mechanism, installed inside the test bench, is used to control the sliding stage to slide back and forth above the test bench; The lifting mechanism, installed between the fixed platform and the sliding platform, is used to lift the middle section of the cable.

[0006] As a preferred technical solution of this utility model, a slide rail is fixedly installed on the upper end of the test platform, and the slide platform has a groove that matches the slide rail. The slide rail is used to limit the movement of the slide platform.

[0007] As a preferred technical solution of this utility model, the fixing mechanism includes a base, a pressure plate, a first screw and a first nut. The bases of the two fixing mechanisms are respectively fixedly connected to the fixing platform and the sliding platform. The two first screws are respectively fixedly connected to the upper two sides of the base, and the first screws pass through the pressure plate. The first nut is threadedly connected to the end of the first screw that extends out of the pressure plate.

[0008] As a preferred technical solution of this utility model, the reciprocating mechanism includes a turntable, a connecting rod and a motor. The turntable is rotatably installed in the test bench. The two ends of the connecting rod are respectively rotatably connected to one end of the sliding table and the upper edge of the turntable. The motor is fixedly installed in the test bench, and the turntable is fixedly connected to the output shaft of the motor.

[0009] As a preferred technical solution of this utility model, the lifting mechanism includes rotating rods, shafts and pads. Multiple rotating rods form a group of support rods. Two groups of support rods are rotatably connected to a fixed platform and a sliding platform, respectively, and the two groups of support rods are staggered. The shaft is rotatably inserted into one end of all rotating rods. The two ends of the pads are respectively connected to one end of the fixed platform and the sliding platform, and the pads are located above the rotating rods.

[0010] As a preferred technical solution of this utility model, the pad is set as a cotton strip, located between the cable and the rotating rod, for flexible contact with the cable.

[0011] As a preferred technical solution of this utility model, a limiting mechanism is installed at the upper end of both the fixed platform and the sliding platform. The limiting mechanism includes a limiting rod, a second screw, and a second nut. There are two second screws. The two ends of the limiting rod are slidably sleeved on the two second screws respectively, and the second nut is threadedly connected to the second screw.

[0012] As a preferred embodiment of this utility model, a spring is sleeved on the outer wall of the second screw, and the spring is located below the limiting rod to apply an upward elastic force to the limiting rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are: In this invention, a fixing mechanism is provided to fix both ends of the cable to the upper ends of the fixed platform and the sliding platform, respectively. This utility model uses a reciprocating mechanism to drive a sliding table to slide back and forth on a test platform, thereby causing the cable fixed on the sliding table to bend back and forth. This invention ensures that the cable continues to bend in one direction during the bending process by setting up a lifting mechanism. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the testing device according to an embodiment of the present utility model; Figure 2 This is a cross-sectional view of the test bench according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the connection structure between the fixed platform and the sliding platform according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the sliding table structure according to an embodiment of the present invention.

[0015] In the diagram: 1. Test platform; 11. Fixed platform; 12. Sliding platform; 121. Slide rail; 2. Fixing mechanism; 21. Base; 22. Pressure plate; 23. First screw; 24. First nut; 3. Reciprocating mechanism; 31. Turntable; 32. Connecting rod; 33. Motor; 4. Lifting mechanism; 41. Rotating rod; 42. Shaft; 43. Pad; 5. Limiting mechanism; 51. Limiting rod; 52. Second screw; 53. Second nut; 54. Spring. Detailed Implementation

[0016] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-4 This embodiment provides a testing device for the performance of oil-resistant and high-temperature resistant cables, including a test platform 1. The upper end of the test platform 1 is provided with a fixed platform 11 and a sliding platform 12. The fixed platform 11 is fixedly connected to one side of the upper end of the test platform 1. A slide rail 121 is fixedly connected to the upper end of the test platform 1. A rail groove is opened at the lower end of the sliding platform 12. The sliding platform 12 is slidably mounted on the slide rail 121 through the rail groove. The sliding direction of the sliding platform 12 on the upper end of the test platform 1 is parallel to the central axis of the fixed platform 11.

[0018] like Figure 2As shown, in order to control the sliding of the sliding stage 12, a reciprocating mechanism 3 is installed inside the test platform 1. Specifically, the reciprocating mechanism 3 includes a turntable 31, a connecting rod 32, and a motor 33. The motor 33 is a servo motor and is fixedly installed inside the test platform 1. The turntable 31 is rotatably installed inside the test platform 1 and is fixedly connected to the output shaft of the motor 33. By starting the motor 33, the turntable 31 can be driven to rotate inside the test platform 1. One end of the connecting rod 32 is rotatably connected to the end of the sliding stage 12 away from the fixed platform 11, and the other end of the connecting rod 32 is rotatably connected to the upper edge of the turntable 31. The rotation of the turntable 31, through the connecting rod 32, drives the sliding stage 12 to reciprocate on the upper end of the test platform 1.

[0019] like Figure 1 and Figure 2 As shown, both the fixed platform 11 and the sliding platform 12 are equipped with a fixing mechanism 2 at their upper ends.

[0020] The fixing mechanism 2 includes a base 21, a pressure plate 22, a first screw 23, and a first nut 24. The bases 21 of the two fixing mechanisms 2 are respectively fixedly connected to the fixed platform 11 and the sliding platform 12. Figure 4 As shown, taking the fixing mechanism 2 on the sliding table 12 as an example, there are two first screws 23, and the two first screws 23 are respectively fixedly connected to the upper two sides of the base 21. Through holes are opened at the upper two sides of the pressure plate 22. The two first screws 23 extend through the through holes from the top of the pressure plate 22. The first nut 24 is threadedly connected to the end of the first screw 23 that extends out of the pressure plate 22.

[0021] like Figure 4 As shown, the upper end of the base 21 and the lower end of the pressure plate 22 are both provided with arc-shaped grooves, which are used to engage with the outer side wall of the cable. Multiple protrusions are provided in the arc-shaped grooves of the base 21 and the pressure plate 22 to increase the coefficient of friction with the cable.

[0022] After the sliding table 12 moves away from the fixed table 11, the two ends of the cable are respectively inserted between the base 21 and the pressure plate 22 of the two fixing mechanisms 2. By tightening the first nut 24, the pressure plate 22 is brought close to the base 21, and the pressure plate 22 and the base 21 form a clamping force to fix the cable.

[0023] However, during actual testing, it was found that after the sliding table 12 slides towards the fixed table 11 via the reciprocating mechanism 3, it applies a compressive force to the cable, causing the cable to bend. After the sliding table 12 slides back and forth, the cable cycles through straightening and bending. However, when the cable is bent solely by the compressive force generated by the sliding table 12, the bending angle is uncontrollable. To control the middle section of the cable to bend in one direction, a lifting mechanism 4 is installed between the fixed table 11 and the sliding table 12.

[0024] Specifically, the lifting mechanism 4 includes a rotating rod 41, a shaft 42, and a pad 43, so as to... Figure 3 For example, four rotating rods 41 form a group of support rods. Two groups of support rods are symmetrically arranged and rotatably connected to the fixed platform 11 and the sliding platform 12, respectively. The two groups of support rods are staggered, and the shaft 42 is rotatably inserted into one end of all the rotating rods 41, allowing one end of the two groups of support rods to be rotatably connected. The sliding platform 12 moves away from the fixed platform 11 via the reciprocating mechanism 3. After the sliding platform 12 slides to its farthest point from the fixed platform 11, the two groups of support rods are still connected at an obtuse angle, with the tip of the obtuse angle pointing upwards. When the sliding platform 12 approaches the fixed platform 11, the tip of the included angle of the two groups of support rods rises, and upon contact with the cable, the middle section of the cable can be bent.

[0025] The two ends of the pad 43 are respectively connected to one end of the fixed platform 11 and the sliding platform 12, and the pad 43 is located between the rotating rod 41 and the cable. The pad 43 is preferably made of cotton material, and the rotating connection of the two sets of rotating rods 41 is flexibly connected to the cable through the pad 43.

[0026] During the reciprocating bending of the cable, the outer layer of the cable will come into contact with the edge of the pressure plate 22, causing wear. To reduce wear, such as Figure 1 and Figure 2 As shown, limit mechanisms 5 are installed at the upper ends of both the fixed platform 11 and the sliding platform 12.

[0027] The limiting mechanism 5 includes a limiting rod 51, a second screw 52, ​​and a second nut 53, as follows: Figure 4 As shown, taking the limiting mechanism 5 on the sliding table 12 as an example, there are two second screws 52 and two second nuts 53. The two second screws 52 are fixedly connected to the upper two sides of the sliding table 12 respectively. The two ends of the limiting rod 51 are slidably sleeved on the two second screws 52 respectively. The second nut 53 is threadedly connected to the upper end of the second screw 52 that passes through the limiting rod 51.

[0028] After the cable passes through the lower end of the limiting rod 51 and is installed on the fixing mechanism 2, the second nut 53 is tightened so that the limiting rod 51 fits against the cable. The middle section of the limiting rod 51 is a cylindrical structure. After the middle section of the cable bends upward, the two ends of the cable are limited by the limiting rod 51 to prevent the cable from contacting the edge of the pressure plate 22 and causing wear.

[0029] To facilitate the cable passing through the lower end of the limiting rod 51, a spring 54 is sleeved on the outer wall of the second screw 52. The spring 54 applies an upward elastic force to the limiting rod 51, supporting the limiting rod 51.

[0030] After the sliding table 12 reciprocates and slides in conjunction with the lifting mechanism 4 to keep the cable bent at a certain angle, the condition of the cable after the bending test needs to be observed and checked by instruments. The testing instruments include a megohmmeter (used to measure whether the cable insulation layer maintains sufficient insulation resistance after bending), a withstand voltage tester (used to detect whether the insulation layer has broken down or leaked current under a specified voltage), a conductor resistance tester (used to detect whether the conductor resistance has increased abnormally after bending, in order to determine whether the conductor has broken wires or damage), a microscope or magnifying inspection device (used to observe whether cracks, fissures or peelings appear on the surface of the cable outer sheath and insulation layer), etc. After summarizing and compiling the cable data, the cable bending performance test can be completed.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A testing device for the performance of oil-resistant and high-temperature resistant cables, comprising a testing bench (1), characterized in that: A fixed platform (11) is fixedly installed on one side of the upper end of the test platform (1), and a sliding platform (12) is slidably installed on the upper end of the test platform (1). Fixing mechanism (2), the two fixing mechanisms (2) are respectively installed on the fixing platform (11) and the sliding platform (12) for fixing the two ends of the cable; The reciprocating mechanism (3) is installed inside the test bench (1) and is used to control the sliding table (12) to slide back and forth above the test bench (1); The lifting mechanism (4) is installed between the fixed platform (11) and the sliding platform (12) to lift the middle section of the cable.

2. The oil-resistant and high-temperature-resistant cable performance testing device according to claim 1, characterized in that: The upper end of the test platform (1) is fixedly installed with a slide rail (121), and the slide platform (12) has a groove that matches the slide rail (121). The slide rail (121) is used to limit the movement of the slide platform (12).

3. The oil-resistant and high-temperature-resistant cable performance testing device according to claim 2, characterized in that: The fixing mechanism (2) includes a base (21), a pressure plate (22), a first screw (23) and a first nut (24). The bases (21) of the two fixing mechanisms (2) are fixedly connected to the fixed platform (11) and the sliding platform (12) respectively. The two first screws (23) are fixedly connected to the upper sides of the base (21) respectively, and the first screw (23) passes through the pressure plate (22). The first nut (24) is threadedly connected to the end of the first screw (23) that extends out of the pressure plate (22).

4. The oil-resistant and high-temperature-resistant cable performance testing device according to claim 3, characterized in that: The reciprocating mechanism (3) includes a turntable (31), a connecting rod (32) and a motor (33). The turntable (31) is rotatably installed inside the test bench (1). The two ends of the connecting rod (32) are respectively rotatably connected to one end of the sliding table (12) and the upper edge of the turntable (31). The motor (33) is fixedly installed inside the test bench (1), and the turntable (31) is fixedly connected to the output shaft of the motor (33).

5. The oil-resistant and high-temperature-resistant cable performance testing device according to claim 4, characterized in that: The lifting mechanism (4) includes a rotating rod (41), a shaft (42), and a pad (43). Multiple rotating rods (41) form a set of support rods. Two sets of support rods are rotatably connected to a fixed platform (11) and a sliding platform (12), respectively, and the two sets of support rods are staggered. The shaft (42) is rotatably inserted into one end of all rotating rods (41). The two ends of the pad (43) are respectively connected to one end of the fixed platform (11) and the sliding platform (12), and the pad (43) is located above the rotating rod (41).

6. The oil-resistant and high-temperature-resistant cable performance testing device according to claim 5, characterized in that: The pad (43) is configured as a cotton strip, located between the cable and the rotating rod (41), for flexible contact with the cable.

7. The oil-resistant and high-temperature-resistant cable performance testing device according to claim 5, characterized in that: The upper ends of the fixed platform (11) and the sliding platform (12) are both equipped with a limiting mechanism (5). The limiting mechanism (5) includes a limiting rod (51), a second screw (52) and a second nut (53). There are two second screws (52). The two ends of the limiting rod (51) are respectively slidably sleeved on the two second screws (52). The second nut (53) is threadedly connected to the second screw (52).

8. The oil-resistant and high-temperature-resistant cable performance testing device according to claim 7, characterized in that: A spring (54) is sleeved on the outer wall of the second screw (52), and the spring (54) is located below the limiting rod (51) to apply an upward elastic force to the limiting rod (51).

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