A performance testing device and method for copper-clad aluminum alloy cables for communication

Abstract

The present invention discloses a performance detection device and detection method for the production of copper-clad aluminum alloy cables for communications, specifically relating to the field of cable detection technology. The device includes a detection platform, on which a cable fixing component, a top pressure friction simulation component and a visual detection component are provided. The top pressure friction simulation component includes a top pressure frame, the end of the top pressure frame is rotatably mounted with a top pressure detection wheel, a friction simulation part is mounted on the circumferential side wall of the top pressure detection wheel, and a plurality of groups of air gaps penetrating the inner and outer spaces of the top pressure detection wheel are evenly arranged on the circumferential side of the top pressure detection wheel. A dust hood is also mounted on the top pressure frame. After the wear material is generated during wear, the present invention can promptly remove the wear material, keep the friction area clean, and avoid the accumulation of wear material affecting subsequent detection. At the same time, it can also form a certain cooling effect on the friction area and the top pressure detection wheel, thereby further avoiding the melting and adhesion of the wear material.

Description

Technical Field

[0001] The present invention relates to the technical field of cable detection, and more particularly to a performance detection device and a detection method for the production of copper-clad aluminum alloy cables for communications. Background Art

[0002] Copper Clad Aluminum Alloy (CCA) cable is a new type of conductor material that combines the advantages of copper and aluminum alloys. Due to its lower cost compared to pure copper cables, it has been widely used in the communications field in recent years. Copper Clad Aluminum Alloy cable utilizes a cladding welding process, concentrically wrapping a high-quality copper strip around the outer surface of an aluminum alloy (a core such as a pure aluminum rod or steel wire). This creates a strong atomic metallurgical bond between the copper layer and the core wire, forming an inseparable whole. This allows for drawing and annealing processes similar to those used for single metal wire. During the drawing process, the copper and aluminum diameters change in equal proportions, while the copper layer volume ratio remains relatively constant.

[0003] The basic structure of copper-clad aluminum alloy cable mainly consists of structural layers such as conductor, insulation layer, and sheath layer (depending on actual needs, some cables also have other structures, such as shielding layer, armor layer, etc.). Among them, the sheath layer is located on the outermost side of the cable and provides sufficient protection for the cable structure. It is usually made of PVC, low-smoke zero-halogen material (LSZH) or polyethylene (PE) to protect the cable and adapt to different environmental conditions.

[0004] Since cables need to ensure good stability and safety during communication transmission, effective performance testing of cables is required during their product design and production process, such as the tensile strength, compressive strength, and friction resistance of the cables, to ensure that the produced cables meet the use requirements.

[0005] Among them, during the installation and use of large cables, since the cables are relatively large and heavy, traction machinery is required for traction during the laying process of the cables, and the traction machinery is used to provide sufficiently large traction force. However, for some relatively complex laying environments, such as urban underground pipelines or crowded alleys in towns, cables are easily encountered during laying, such as obstructing structures such as building corners, which may cause the cables to bend. In severe cases, the bending parts of the cables form greater stress and friction with the corresponding obstructing structures, which may lead to accidental damage to the cables and require re-laying, affecting the construction accuracy and causing material waste.

[0006] Therefore, in the design and production process of cables, in order to further improve the quality of cables, it is necessary to simulate the above-mentioned situation to fully test the cables. The large-scale cable testing mainly adopts sampling testing, that is, cutting a section of the cable structure, bending the cable sample on the test bench with the help of a hydraulic bending structure, and setting a corresponding friction test structure at the bending structure. The friction test structure is driven to move and perform friction testing on the inner side of the cable sample bend, and the quality of the cable is judged according to the degree of wear of the cable.

[0007] However, for relatively thick cable samples, it is not easy to move after the cable is bent. Therefore, the friction test structure is only driven to move on the inside of the cable for testing, forming a simulation test of the fixed point. If the quality of the cable product does not meet the standards, the sheath layer is worn prematurely and severely, or in the design and development process, it is necessary to further judge the quality of the cable, and continuous friction is required to judge whether the sheath layer is completely damaged until the copper-clad aluminum alloy core is subjected to the conditions required for wear. In the above process, wear materials will be generated. For cases with long test time and long friction test time, since the top pressure between the friction test structure and the cable is large during the test, the wear material is not easy to detach. If too much time passes, it is easy to gather around the friction test structure and at the edge of the contact area between the friction test structure and the cable, affecting subsequent detection and not conducive to long-term testing. Summary of the Invention

[0008] The present invention provides a performance testing device and testing method for the production of copper-clad aluminum alloy cables for communications, and aims to solve the problem that, in existing testing methods, for situations where the test time is long and the friction test time is long, since the top pressure between the friction test structure and the cable is large during the test, the wear material is not easy to separate, and over time it is easy to accumulate around the friction test structure and at the edge of the contact area between the friction test structure and the cable, affecting subsequent testing and being unfavorable for long-term testing.

[0009] To achieve the above-mentioned object, the present invention provides the following technical solution: a performance testing device for copper-clad aluminum alloy cables for communication, comprising a testing platform, on which are provided a cable fixing assembly, a top pressure friction simulation assembly, and a visual detection assembly, wherein two sets of cable fixing assemblies are provided, and the cable fixing assemblies are used to fix both ends of the cable sample;

[0010] The top pressure friction simulation component includes a top pressure frame, which is slidably mounted on the detection table. The detection table is also equipped with a top pressure driver, which is used to drive the top pressure frame to move. The end of the top pressure frame is rotatably mounted with a top pressure detection wheel, and a friction simulation member is mounted on the circumferential side wall of the top pressure detection wheel. The top pressure frame is also provided with a friction driver, which is used to drive the top pressure detection wheel to rotate.

[0011] The top pressure detection wheel has a hollow structure, and multiple groups of air gaps that penetrate the inner and outer spaces of the top pressure detection wheel are evenly arranged on the circumferential side of the top pressure detection wheel. A dust hood is also installed on the top pressure frame, and the top pressure detection wheel is located at the air exhaust port of the dust hood.

[0012] In a preferred embodiment, the visual inspection component includes a lower visual identification camera group and an upper visual identification camera group. The lower visual identification camera group is arranged below the cable sample, and the upper visual identification camera group is arranged above the cable sample. The lower visual identification camera group is fixedly mounted on the top pressure frame, and the upper visual identification camera group is controlled to move by a longitudinal drive, and the longitudinal drive is fixedly mounted on the inspection table.

[0013] In a preferred embodiment, a belt-type filling assembly is also provided on the outside of the top pressure detection wheel. The belt-type filling assembly includes two groups of belts. The two groups of belts are fixedly connected by multiple groups of filling connecting rods. The filling connecting rods are engaged with the air gap of the top pressure detection wheel. Two groups of auxiliary pulleys are also rotatably installed on the top pressure frame. The two groups of auxiliary pulleys are adapted to the belts, and the belt-type filling assembly forms a triangular state. A friction simulation part is also fixedly installed on the outer wall of the belt.

[0014] In a preferred embodiment, the dust hood is connected to an air suction pipe, the dust hood is connected to an air pump structure, and two sets of auxiliary air suction hoods are also provided on the top pressure frame. The two sets of auxiliary air suction hoods are respectively provided with two oblique sides of a triangle formed by the belt-type filling assembly, and the pipes of the auxiliary air suction hoods and the air suction pipe are interconnected.

[0015] In a preferred embodiment, a cooling air pipe is provided inside the top pressure detection wheel, and the cooling air pipe is fixedly installed on the top pressure frame. The cooling air pipe runs through the interior of the top pressure detection wheel and rotates with the top pressure detection wheel. Multiple groups of blowing holes are provided around the cooling air pipe, and the cooling air pipe is connected to a low-temperature air supply source through the air pipe.

[0016] In a preferred embodiment, the cable fixing assembly includes a movable seat, which is slidably arranged on the detection table, and the sliding direction of the movable seat is perpendicular to the sliding direction of the top pressure frame. A cable fixer is installed on the movable seat, and the cable fixer is connected to the movable seat through a turntable. The detection table is also provided with a transverse drive for driving the movable seat to slide.

[0017] In a preferred embodiment, the cable holder includes an inserting sleeve and a locking hoop. The inserting sleeve is fixedly mounted on the turntable, and the locking hoop is rotatably mounted on the inserting sleeve. A locking structure is provided between the locking hoop and the inserting sleeve.

[0018] In a preferred embodiment, a closed cover is installed on the testing platform, and a temperature control system is provided in the closed cover. The temperature control system includes a heating device, a cooling device and a temperature sensor.

[0019] In a preferred embodiment, the inserting sleeve is rotatably provided with multiple sets of driving wheels, which are in contact with the outer wall of the cable sample. The inserting sleeve is also provided with a motor structure for driving the driving wheels to rotate.

[0020] A method for detecting the performance of copper-clad aluminum alloy cables for communication, comprising the following steps:

[0021] Step 1: Fix the two ends of the cable sample with two sets of cable holders respectively, and control the top pressure detection wheel to drive the top pressure frame forward, and then cooperate with the movement of the movable seat to make the top pressure detection wheel bend the cable sample to form the bending angle required for the test;

[0022] Step 2: Keep the cable sample at the above angle for a corresponding test time, and use a visual inspection component to check whether the cable sample is damaged;

[0023] Step 3: Drive the top pressure detection wheel to rotate a corresponding number of test circles, and use the visual detection component to determine the depth to which the top pressure detection wheel is pressed into the sheath layer of the cable sample;

[0024] Step 4: Drive the movable seat and the top pressure frame to reset, so that the cable sample returns to a straight state, drive the cable sample to rotate, and use the visual detection component to perform comprehensive image acquisition of the cable sample.

[0025] The beneficial effects of the present invention are as follows: the present invention uses a dust suction hood to evacuate the area near the top pressure detection wheel, and the multiple air slits of the top pressure detection wheel make the top pressure detection wheel relatively breathable, and then after the wear material is generated during wear, the wear material can be promptly extracted to keep the friction area clean, and avoid the accumulation of wear material affecting subsequent detection. At the same time, the air suction of the dust suction hood can form sufficient airflow around the top pressure detection wheel and in the friction area between the top pressure detection wheel and the cable sample, which can form a certain cooling effect on the friction area and the top pressure detection wheel, thereby further avoiding the melting and adhesion of the wear material, and the detection device provided by the present invention can perform detection in multiple ways, and is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 This is a top view of the cable sample of the present invention in the detection state.

[0028] Figure 3 Schematic diagram of the overall structure of the cable fixing assembly of the present invention.

[0029] Figure 4 This is a cross-sectional view of the detection device of the present invention when the cable sample is in the detection state.

[0030] Figure 5This is a schematic diagram of the cooperation between the top pressure detection wheel and the cable sample in the detection state of the present invention.

[0031] Figure 6 This is a top view of the top pressure detection wheel of the present invention when it is matched with the cable sample.

[0032] Figure 7 This is a schematic diagram of the structure of the present invention after adding a visual detection component.

[0033] Figure 8 This is a state diagram of a cable sample being subjected to a comprehensive visual inspection at an initial position after the cable sample is straightened after the friction test of the present invention.

[0034] Figure 9 This is a schematic structural diagram of the improved top pressure friction simulation component of the present invention.

[0035] Figure 10 It is a structural schematic diagram of the belt-type filling assembly of the present invention.

[0036] Figure 11 For the present invention Figure 9 A magnified view of the structure of part A.

[0037] Figure 12 This is a schematic diagram of the structure of the cooling air pipe inside the top pressure detection wheel of the present invention.

[0038] Figure 13 Flow chart of the detection method of the present invention.

[0039] The accompanying drawings are marked as follows: 1. test table; 11. closing cover; 2. cable fixing assembly; 21. moving seat; 22. cable fixer; 221. plug-in sleeve; 222. locking hoop; 223. driving wheel; 23. transverse drive; 24. turntable; 3. top pressure friction simulation assembly; 31. top pressure frame; 32. top pressure detection wheel; 321. air gap; 33. top pressure drive; 34. dust collection hood; 341. suction pipe; 342. auxiliary suction hood; 35. friction drive; 36. friction simulation part; 37. belt-type filling assembly; 371. belt; 372. filling connecting rod; 373. auxiliary pulley; 38. cooling air pipe; 381. blowing hole; 4. cable sample; 5. visual inspection assembly; 51. lower visual recognition camera group; 52. upper visual recognition camera group; 53. longitudinal drive. DETAILED DESCRIPTION

[0040] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0041] Refer to the instruction manual Figures 1 to 12 A performance testing device for the production of copper-clad aluminum alloy cables for communications includes a testing platform 1, on which are provided two sets of cable fixing components 2, which are used to fix the two ends of a cable sample 4, and a top pressure friction simulation component 3, which is used to press and bend the middle part of the cable sample 4 to keep the cable sample 4 as Figure 2 The bending state shown is used to test the bending performance of the cable sample 4 and to simulate the state in which the cable encounters an obstruction structure and forms a bend during laying.

[0042] Specifically, the cable fixing assembly 2 includes a movable seat 21, which is slidably arranged on the test bench 1. A cable fixer 22 is installed on the movable seat 21. The cable fixer 22 is used to wrap and squeeze the end area of ​​the cable sample 4 (refer to the clamp structure or other existing structures for fixing the cable). The cable fixer 22 is connected to the movable seat 21 through a turntable 24, so that when the top pressure friction simulation assembly 3 presses the cable sample 4, the cable fixer 22 can form an adaptive rotation. The test bench 1 is also provided with a transverse drive 23 for driving the movable seat 21 to slide (refer to the motor screw structure and the hydraulic cylinder structure).

[0043] The top pressure friction simulation component 3 includes a top pressure frame 31, which is slidably installed on the test platform 1, and the sliding direction of the top pressure frame 31 is perpendicular to the sliding direction of the movable seat 21. The end of the top pressure frame 31 is rotatably installed with a top pressure detection wheel 32, and a friction simulation part 36 is installed on the circumferential side wall of the top pressure detection wheel 32, wherein the friction simulation part 36 is a simulation structure. For example, a rough structure simulating a cement wall can be used, or a metal structure simulating a steel structure can be used. The specific selection depends on the product testing requirements. A top pressure driver 33 is also installed on the test platform 1. The top pressure driver 33 is used to drive the top pressure frame 31 to move and make the top pressure detection wheel 32 contact with the middle part of the cable sample 4. In conjunction with the movement of the two groups of movable seats 21, the cable sample 4 is top-pressed and bent to form an attachment. Figure 4 In the state shown, a friction driver 35 is further provided on the top pressure frame 31, and the friction driver 35 is coupled with the top pressure detection wheel 32 through a transmission belt. The friction driver 35 is used to drive the top pressure detection wheel 32 to rotate, so as to drive the top pressure detection wheel 32 to rotate (reciprocating rotation or continuous unidirectional rotation) to simulate the friction state after sufficient top pressure is formed on the cable sample 4.

[0044] During actual testing, the two ends of the cable sample 4 are first fixedly connected to the two groups of cable fixing components 2, and then the top pressure driver 33 is controlled to control the movement of the top pressure frame 31, so that the top pressure detection wheel 32 contacts the cable sample 4 and forms a top pressure, and the two groups of movable seats 21 are synchronously driven to move and adapt, so that the cable sample 4 can form a corresponding state. Among them, the detection device provided by the present invention has a variety of detection methods. For example, the top pressure position of the top pressure detection wheel 32 is continuously adjusted, that is, the bending angle of the cable sample 4 is continuously changed until the cable sample 4 is broken or damaged, so as to obtain the maximum bendable angle of the cable sample 4, or directly set the fixed angle requirement, control the top pressure frame 31 and the movable seat 21 to move so that the cable sample 4 maintains the above-mentioned fixed angle, and detects whether the sheath layer of the cable sample 4 is cracked or damaged within the specified time. After the bending performance test, the top pressure detection wheel 32 can also be driven to rotate to make the top pressure detection wheel 3 2 continuously generates friction with the inner arc side of the cable sample 4 to form a friction simulation. Similarly, during actual testing, the top pressure detection wheel 32 can be driven to rotate a specified number of circles according to needs to determine whether the cable sample 4 is damaged or to what extent it is damaged, or the top pressure detection wheel 32 can be driven to rotate continuously to determine the number of friction circles of the top pressure detection wheel 32 required until the sheath layer of the cable sample 4 is completely damaged and the internal copper-clad aluminum alloy core is exposed. In the above test process, judging the bending duration of the cable sample 4 at a specified angle and judging the damage of the cable sample 4 at a specified number of rotations of the top pressure detection wheel 32 are suitable for product testing, while constantly changing the angle to judge the bending angle that the cable sample 4 can withstand and continuously driving the top pressure detection wheel 32 to rotate to judge the time required for wear and damage of the cable sample 4 or the number of rotations of the top pressure detection wheel 32 are suitable for extreme testing and improvement of cable performance during product development.

[0045] It should be noted that in this embodiment, corresponding pressure sensors are provided between the top pressure frame 31 and the top pressure driver 33, and between the movable seat 21 and the transverse movement driver 23, so that during actual detection, the top pressure of the top pressure detection wheel 32 on the cable sample 4, as well as the tension formed on other areas of the cable sample 4 after the top pressure detection wheel 32 forms a top pressure on the middle part of the cable sample 4, can be obtained, so as to accurately acquire data on the cable sample 4, improve the detection accuracy, and adjust the movement of the movable seat 21 and the top pressure frame 31 in real time according to needs, so as to better meet the detection requirements.

[0046] In the above embodiment, when the top pressure detection wheel 32 rotates for a relatively long number of times, or when the top pressure detection wheel 32 needs to rotate continuously, in order to prevent the wear material from adhering to the surface of the friction simulation part 36 or accumulating in the area between the top pressure detection wheel 32 and the cable sample 4 and affecting the subsequent wear detection, this embodiment also provides the following solution. For details, refer to the attached manual. Figure 5 and Figure 6The top pressure detection wheel 32 is a hollow structure. A plurality of air gaps 321 penetrating the inner and outer spaces of the top pressure detection wheel 32 are evenly arranged on the circumferential side of the top pressure detection wheel 32, thereby forming a cage-like structure of the top pressure detection wheel 32. A dust hood 34 is also installed on the top pressure frame 31. The top pressure detection wheel 32 is located at the air suction port of the dust hood 34. The dust hood 34 is connected to an air suction pipe 341. The dust hood 34 is connected to an air pump structure. In the actual detection process, the dust hood 34 can be used to evacuate the area near the top pressure detection wheel 32, and the top pressure detection wheel 32 can be evacuated. The multiple sets of air gaps 321 of the measuring wheel 32 make the top pressure detection wheel 32 relatively breathable, so that after the wear material is generated during wear, the wear material can be promptly extracted to keep the friction area clean and avoid the accumulation of wear material affecting subsequent detection. At the same time, the suction of the dust hood 34 can form sufficient airflow around the top pressure detection wheel 32 and the friction area between the top pressure detection wheel 32 and the cable sample 4, which can form a certain cooling effect on the friction area and the top pressure detection wheel 32, thereby further avoiding the melting and adhesion of the wear material.

[0047] Since the sheath layer of the cable sample 4 is mainly made of polyvinyl chloride PVC, polyethylene PE and other materials, its actual performance is related to the ambient temperature of the use environment. Therefore, in the above-mentioned testing process, in order to judge the actual performance of the cable sample 4 under the corresponding temperature environment (such as high temperature or low temperature environment), it is also necessary to control the temperature of the testing environment. Therefore, this embodiment can also install a closed cover 11 on the testing platform 1, and use the closed cover 11 to form a closed protection for the cable sample 4 and form a certain temperature space. At the same time, a corresponding temperature control system is set in the closed cover 11, such as a high-temperature control system (heating equipment) and a low-temperature control system (cooling equipment). Temperature control is a commonly used solution in product testing, and this embodiment will not be explained in detail. In actual testing, the ambient temperature inside the closed cover 11 can be adjusted according to needs to achieve environmental simulation, thereby providing more sufficient test parameters for cable production and research and development.

[0048] In the above embodiment, the damage degree of the cable sample 4 can be judged by human observation or visual recognition equipment. However, the presence of the closed cover 11 makes it difficult to observe during the detection process. In order to improve the detection and recognition accuracy, this embodiment also provides a visual detection component 5. For details, refer to the attached manual. Figure 7The visual inspection component 5 includes a lower visual recognition camera group 51 and an upper visual recognition camera group 52. The lower visual recognition camera group 51 is arranged below the cable sample 4, and the upper visual recognition camera group 52 is arranged above the cable sample 4. The lower visual recognition camera group 51 is set to at least two groups, and the upper visual recognition camera group 52 is set to at least one group (the number distribution of the lower visual recognition camera group 51 and the upper visual recognition camera group 52 can also be reversed, but the total number of all visual recognition cameras is at least three groups to ensure that the circular cable sample 4 is fully recognized). The lower visual recognition camera group 5 1 and the upper visual recognition camera group 52 are both commonly used visual recognition cameras and are equipped with corresponding image recognition and comparison systems. Since image recognition technology has been widely used, this embodiment will not be explained in detail. The lower visual recognition camera group 51 and the upper visual recognition camera group 52 can be set in a fixed area. For example, when performing a specified bending angle test on the cable sample 4, the lower visual recognition camera group 51 and the upper visual recognition camera group 52 can be directly set at the bending point of the cable sample 4, and the shooting angles of the lower visual recognition camera group 51 and the upper visual recognition camera group 52 can be adjusted in advance to ensure that the cable sample 4 can be tested at a specified bending angle. The bending area of ​​the cable sample 4 is fully covered. At the same time, the lower visual recognition camera group 51 and the upper visual recognition camera group 52 can be set to be movable. For example, the lower visual recognition camera group 51 can be directly fixed on the top pressure frame 31 and move with the top pressure detection wheel 32. The top pressure detection wheel 32 is fixed in position compared to the top pressure frame 31. Therefore, the lower visual recognition camera group 51 can stably visually recognize and cover the bending area formed by the contact between the cable sample 4 and the top pressure detection wheel 32, and the upper visual recognition camera group 52 can be controlled to move by the longitudinal drive 53 (such as a linear motor). The moving driver 53 is fixedly installed in the closed cover 11, and the longitudinal driving driver 53 is used to drive the upper visual recognition camera group 52 to move in the same direction as the top pressure frame 31, so as to adapt to the position of the top pressure detection wheel 32 under different angle test conditions. An angle adjustment mechanism or more moving driving structures can also be set between the upper visual recognition camera group 52 and the longitudinal driving driver 53 to achieve multi-faceted adjustment of the shooting angle and position of the upper visual recognition camera group 52. In addition, if there is no spatial obstacle, the upper visual recognition camera group 52 can be directly fixed on the top pressure frame 31 like the lower visual recognition camera group 51.

[0049] In the above embodiment, the cable sample 4 in the bent state can be fully identified, but the detection under this scheme is mainly for the cracks on the outer arc side of the bending part of the cable sample 4 (the cracks can be stretched and opened, which is easier to observe). However, since the top pressure detection wheel 32 is still in contact with the cable sample 4 in this state, it is only possible to judge the tightness of the contact between the top pressure detection wheel 32 and the cable sample 4 before and after friction (that is, the degree of pressure of the top pressure detection wheel 32 relative to the sheath layer of the cable sample 4). It is not easy to judge the detailed wear condition of the cable sample 4. For this reason, this embodiment also provides the following technical solutions. For details, refer to the attached manual. Figure 8 The cable fixer 22 includes an inserting sleeve 221 and a locking hoop 222. The inserting sleeve 221 is fixedly mounted on the turntable 24, and the locking hoop 222 is rotatably mounted on the inserting sleeve 221. When installing the cable sample 4, the cable sample 4 is inserted into the inserting sleeve 221, and the locking hoop 222 is flipped and engaged with the locking structure on the inserting sleeve 221. The bolt structure can also be used for fastening and installation. The cable sample 4 can be fixed by squeezing it. Among them, the locking hoop 222 can also be fixed using other types of cable fixing structures to improve the fixing effect of the cable sample 4, but the corresponding fixing structures are all existing solutions, and this embodiment will not be explained in detail.

[0050] Multiple groups of driving wheels 223 are rotatably provided on the insertion sleeve 221, and the driving wheels 223 are used to contact the outer wall of the cable sample 4. The locking hoop insertion sleeve 221 is also provided with a motor structure for driving the driving wheels 223 to rotate. After the friction test is completed, the top pressure frame 31 can be driven to reset, and the two groups of movable seats 21 can be driven to move to straighten the cable sample 4. After the cable sample 4 is straightened, the locking hoop 222 is unlocked, and with the help of the cooperation between the driving wheels 223 and the cable sample 4, the driving wheels 223 are rotated to drive the cable sample 4 to rotate, so that the cable sample 4 rotates after it is straightened. At this time, the lower visual recognition camera group 51 fixedly mounted on the top pressure frame 31 is just below the cable sample 4 (for other installation methods, a corresponding driving structure can also be provided to drive the lower visual recognition camera group 51 or the upper visual recognition camera group 52 to this position), so that the test area of ​​the cable sample 4 can be comprehensively visually recognized, thereby improving the recognition accuracy and enhancing the accuracy of the detection data.

[0051] The above driving method of the cable sample 4 is only a simple solution provided by this embodiment. Its core is to drive the cable sample 4 to rotate for comprehensive visual identification. Therefore, it is also possible to rotate the cable sample 4 by directly driving the cable fixer 22 without unlocking the locking hoop 222.

[0052] It should be noted that, since the two groups of movable seats 21 can also move relative to each other, and for the driving scheme of the movable seat 21, a hydraulic cylinder can also be used as a transverse drive 23 to drive the movable seat 21, therefore, in addition to the bending test, this device can also make use of the two groups of movable seats 21 to directly move back and forth, perform a direct tensile test on the cable sample 4, and make use of the lower visual recognition camera group 51 in the corresponding position to perform sufficient visual recognition detection.

[0053] Furthermore, in the above embodiment, in order to clean the wear material attached to the top pressure detection wheel 32, an air gap 321 is opened around the top pressure detection wheel 32. If the air gap 321 is too narrow, the air circulation effect is poor. If the air gap 321 is too wide, in the actual test process, especially for the cable sample 4 with good performance, which has strong bending and tensile strength, the top pressure of the top pressure detection wheel 32 on the cable sample 4 is relatively large. Therefore, at the beginning, the material of the outer sheath of the cable sample 4 is easily squeezed into the air gap 321, which is not conducive to friction testing. Therefore, this embodiment further improves the top pressure friction simulation component 3. For details, refer to the attached manual. Figures 9 to 12The outer side of the top pressure detection wheel 32 is also provided with a belt-type filling assembly 37, which includes two sets of belts 371. The two sets of belts 371 are fixedly connected by multiple sets of filling connecting rods 372. The filling connecting rods 372 engage with the air gap 321 of the top pressure detection wheel 32. Two sets of auxiliary pulleys 373 are rotatably installed on the top pressure frame 31. The two sets of auxiliary pulleys 373 are adapted to the belts 371, thereby supporting the belts 371 and the filling connecting rods 372 to form a triangular state. A friction simulation part 36 is also fixedly installed on the outer wall of the belt 371, and the air gap 321 of the top pressure detection wheel 32 and the filling connecting rods 372 of the belt-type filling assembly 37 form a transmission with each other like a sprocket and a chain. At the area where the top pressure detection wheel 32 corresponds to the cable sample 4, the filling connecting rods 372 and the air gap 321 engage with each other to fill the air gap 321, thereby making the top pressure detection wheel 32 directly correspond to the cable sample 4, a complete contact surface is formed in the area of ​​4, and the sheath layer of the cable sample 4 will not be extruded and deformed, thereby ensuring the friction test effect. At the same time, when the top pressure detection wheel 32 and the cable sample 4 are separated, the filling connecting rod 372 also gradually leaves the top pressure detection wheel 32, and the air gap 321 in this range is connected. At the same time, a vacant state is also formed between each filling connecting rod 372. Therefore, with the help of the suction of the dust hood 34, the wear material attached to the top pressure detection wheel 32 and the filling connecting rod 372 can still be fully cleaned to ensure the normal progress of the friction simulation. Moreover, since the filling connecting rod 372 is constantly leaving the cable sample 4 during the rotation of the top pressure detection wheel 32, when the wear structure formed by friction adheres to the top pressure detection wheel 32 or the filling connecting rod 372, it can also be taken out by the filling connecting rod 372 and then collected by the dust hood 34, thereby further improving the cleanliness of the friction area.

[0054] Furthermore, in order to improve the cleaning effect of wear materials, two sets of auxiliary vacuum hoods 342 are also provided on the top pressure frame 31. The two sets of auxiliary vacuum hoods 342 correspond to the two isosceles hypotenuses of the triangle formed by the belt-type filling assembly 37, and the auxiliary vacuum hoods 342 are connected to the pipes of the suction pipe 341.

[0055] For scenarios that require long-term simulation tests, the long-term rotation of the top pressure detection wheel 32 will also generate heat. At this time, for a test environment with temperature restrictions, the above heat will affect the temperature of the bending part of the cable sample 4, especially in a low-temperature simulation environment (the material of the sheath layer of the cable sample 4 will become brittle and its performance will decrease under low-temperature conditions). Friction heating will affect the test. For this reason, this embodiment also provides the following technical solutions. For details, please refer to the attached manual. Figure 9 and Figure 12A cooling air pipe 38 is provided inside the top pressure detection wheel 32, and the cooling air pipe 38 is fixedly installed on the top pressure frame 31. The cooling air pipe 38 runs through the inside of the top pressure detection wheel 32 and rotates with the top pressure detection wheel 32. A plurality of groups of blowing holes 381 are provided around the cooling air pipe 38, and the cooling air pipe 38 is connected to a low-temperature air supply source through an air pipe. The low-temperature air supply source includes an air pump, which is used to transport air that has been cooled by a cooling device such as an air conditioner or a refrigerator into the cooling air pipe 38, so as to fully cool the top pressure detection wheel 32, offset the friction heat of the top pressure detection wheel 32, and reduce the influence of the friction heating of the top pressure detection wheel 32 on the detection of the cable sample 4.

[0056] The present invention is based on the above detection equipment and also provides one of the detection schemes. For details, please refer to the attached manual. Figure 13 A method for detecting the performance of copper-clad aluminum alloy cables for communication, comprising the following steps:

[0057] Step 1: Fix the two ends of the cable sample 4 to the two sets of cable holders 22 respectively, and control the pressing driver 33 to drive the pressing frame 31 forward, and then cooperate with the movement of the movable base 21 to make the pressing detection wheel 32 bend the cable sample 4 to form the bending angle required for testing;

[0058] Step 2: Keep the cable sample 4 at the above angle for a corresponding test time (depending on the test requirements), and use the visual inspection component 5 to inspect whether the cable sample 4 has cracks or other damage;

[0059] Step 3: Drive the top pressure detection wheel 32 to rotate the corresponding test number of circles (determined according to the detection requirements), and use the visual detection component 5 to determine the depth of the top pressure detection wheel 32 pressed into the sheath layer of the cable sample 4 (the deeper the pressure, the more serious the wear);

[0060] Step 4: Drive the movable seat 21 and the pressing frame 31 to reset, so that the cable sample 4 returns to a straight state, drive the cable sample 4 to rotate, and use the visual inspection component 5 to perform comprehensive image acquisition on the cable sample 4 to further verify the test results.

[0061] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A performance testing device for copper-clad aluminum alloy cables for communication, comprising a testing platform (1), wherein the testing platform (1) is provided with a cable fixing component (2), a top pressure friction simulation component (3) and a visual detection component (5), wherein the cable fixing component (2) is provided with two groups, and the cable fixing component (2) is used to fix both ends of a cable sample (4); The top pressure friction simulation component (3) includes a top pressure frame (31), the top pressure frame (31) is slidably mounted on the detection table (1), and a top pressure driver (33) is also mounted on the detection table (1), and the top pressure driver (33) is used to drive the top pressure frame (31) to move, and is characterized in that: A pressure detection wheel (32) is rotatably mounted on the end of the pressure frame (31), a friction simulation member (36) is mounted on the circumferential side wall of the pressure detection wheel (32), and a friction driver (35) is further provided on the pressure frame (31), the friction driver (35) being used to drive the pressure detection wheel (32) to rotate; The cable fixing assembly (2) includes a movable seat (21), the movable seat (21) is slidably arranged on the detection table (1), the sliding direction of the movable seat (21) is perpendicular to the sliding direction of the top pressure frame (31), a cable fixer (22) is installed on the movable seat (21), the cable fixer (22) and the movable seat (21) are connected via a turntable (24), and a transverse drive (23) for driving the movable seat (21) to slide is also provided on the detection table (1); The visual inspection component (5) comprises a lower visual recognition camera group (51) and an upper visual recognition camera group (52), wherein the lower visual recognition camera group (51) is arranged below the cable sample (4), and the upper visual recognition camera group (52) is arranged above the cable sample (4), the lower visual recognition camera group (51) is fixedly mounted on the top pressure frame (31), and the upper visual recognition camera group (52) is controlled to move by a longitudinal drive (53), and the longitudinal drive (53) is fixedly mounted on the inspection table (1); The top pressure detection wheel (32) is a hollow structure, and a plurality of air gaps (321) penetrating the inner and outer spaces of the top pressure detection wheel (32) are evenly arranged on the circumferential side of the top pressure detection wheel (32). A dust hood (34) is also installed on the top pressure frame (31), and the top pressure detection wheel (32) is located at the air extraction port of the dust hood (34); A belt-type filling assembly (37) is further provided on the outside of the top pressure detection wheel (32), and the belt-type filling assembly (37) includes two groups of belts (371). The two groups of belts (371) are fixedly connected via multiple groups of filling connecting rods (372). The filling connecting rods (372) are engaged with the air gap (321) of the top pressure detection wheel (32). Two groups of auxiliary pulleys (373) are rotatably mounted on the top pressure frame (31). The two groups of auxiliary pulleys (373) are adapted to the belts (371), and the belt-type filling assembly (37) forms a triangular state. A friction simulation part (36) is also fixedly mounted on the outer wall of the belt (371). The dust hood (34) is connected to an air suction pipe (341), and the dust hood (34) is connected to an air pump structure. Two groups of auxiliary air suction hoods (342) are also provided on the top pressure frame (31). The two groups of auxiliary air suction hoods (342) are respectively provided to correspond to the two hypotenuses of a triangle formed by the belt-type filling assembly (37), and the auxiliary air suction hoods (342) and the air suction pipe (341) are connected to each other.

2. The performance testing device for copper-clad aluminum alloy cables for communication according to claim 1, characterized in that: A cooling air pipe (38) is provided inside the top pressure detection wheel (32), and the cooling air pipe (38) is fixedly mounted on the top pressure frame (31). The cooling air pipe (38) passes through the inside of the top pressure detection wheel (32) and is rotatably matched with the top pressure detection wheel (32). A plurality of groups of blowing holes (381) are provided around the cooling air pipe (38), and the cooling air pipe (38) is connected to a low-temperature air supply source through an air pipe.

3. The performance testing device for copper-clad aluminum alloy cables for communication according to claim 2, characterized in that: The cable holder (22) comprises an inserting sleeve (221) and a locking hoop (222), wherein the inserting sleeve (221) is fixedly mounted on the turntable (24), and the locking hoop (222) is rotatably mounted on the inserting sleeve (221), and a locking structure is provided between the locking hoop (222) and the inserting sleeve (221).

4. The performance testing device for copper-clad aluminum alloy cables for communication according to claim 3, characterized in that: A closed cover (11) is installed on the detection platform (1), and a temperature control system is provided in the closed cover (11). The temperature control system includes a heating device, a cooling device and a temperature sensor.

5. The performance testing device for copper-clad aluminum alloy cables for communication according to claim 4, characterized in that: The inserting sleeve (221) is rotatably provided with a plurality of driving wheels (223), the driving wheels (223) are in contact with the outer wall of the cable sample (4), and the inserting sleeve (221) is also provided with a motor structure for driving the driving wheels (223) to rotate.

6. A method for detecting the performance detection device for producing copper-clad aluminum alloy cables for communication according to claim 5, characterized in that: The following steps are involved: Step 1: Fix the two ends of the cable sample (4) to the two sets of cable holders (22) respectively, and control the top pressure driver (33) to drive the top pressure frame (31) to move forward, and then cooperate with the moving seat (21) to move, so that the top pressure detection wheel (32) bends the cable sample (4) to form the bending angle required for the test; Step 2: Keep the cable sample (4) at the above angle for a corresponding test time, and use the visual inspection component (5) to detect whether the cable sample (4) is damaged; Step 3: driving the top pressure detection wheel (32) to rotate a corresponding number of test turns, and judging the depth of the top pressure detection wheel (32) pressed into the sheath layer of the cable sample (4) through the visual detection component (5); Step 4: driving the movable seat (21) and the top pressure frame (31) to reset, so that the cable sample (4) returns to a straight state, driving the cable sample (4) to rotate, and performing comprehensive image acquisition of the cable sample (4) through the visual detection component (5).

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