Performance detection device and detection method for production of copper-clad aluminum alloy cable for communication

Abstract

The invention discloses a performance detection device and method for communication copper-clad aluminum alloy cable production, and particularly relates to the technical field of cable detection.The device comprises a detection table, the detection table is provided with a cable fixing assembly, a top pressure friction simulation assembly and a visual detection assembly, and the top pressure friction simulation assembly comprises a top pressure frame; a top pressure detection wheel is rotatably mounted at the end part of the top pressure frame, a friction simulation piece is mounted on the circumferential side wall of the top pressure detection wheel, a plurality of groups of air gaps penetrating through the inner space and the outer space of the top pressure detection wheel are uniformly formed in the circumferential side of the top pressure detection wheel, and a dust hood is further mounted on the top pressure frame. After an abrasion material is generated during abrasion, the abrasion material can be pumped away in time, cleanliness of a friction area is kept, the situation that follow-up detection is affected by accumulation of the abrasion material is avoided, meanwhile, a certain cooling effect can be achieved on the friction area and the jacking detection wheel, and therefore fusion and adhesion of the abrasion material can be further avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of cable detection, and more specifically, 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) is a new type of conductor cable that combines the advantages of copper and aluminum alloy. Compared with pure copper cables, it has been widely used in the field of communications in recent years because of its lower cost. Copper Clad Aluminum Alloy Cable adopts the coating welding manufacturing technology to concentrically coat the outer surface of aluminum alloy (pure aluminum rod or steel wire and other core wires) with high-quality copper strips, and form a strong metallurgical bond between the atoms between the copper layer and the core wire, so that the two different metal materials are combined into an inseparable whole, which can be drawn and annealed like processing a single metal wire. During the drawing process, the copper and aluminum change their diameters in the same proportion, and the volume ratio of the copper layer remains relatively constant.

[0003] The basic structure of copper-clad aluminum alloy cable is mainly composed of conductor, insulation layer, sheath layer and other structural layers (according to 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, providing full 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 tests need to be carried out on the cables during the product design and production process, such as the tensile, compressive 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 needed for traction during the laying of the cables, and with the help of the traction machinery, sufficient traction force is provided. However, for some relatively complex laying environments, such as urban underground pipelines or crowded alleys in towns, cables are easily encountered obstructing structures such as building corners during laying, which may cause the cables to bend. In severe cases, the bending parts of the cables will 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 test 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, only the friction test structure is 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 determine whether the sheath layer is completely damaged until the copper-clad aluminum alloy core is subjected to wear. In the above process, wear materials will be produced. For long test times and long friction test times, due to the large top pressure between the friction test structure and the cable during the test, the wear materials are not easy to detach. If the time is too long, they are 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 a testing method for the production of copper-clad aluminum alloy cables for communications, and aims to solve the following problem: in the existing testing method, for the case 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 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 over a long period of time, affecting subsequent detection and being not conducive to long-term testing.

[0009] To achieve the above-mentioned object, the present invention provides the following technical solutions: a performance testing device for the production of copper-clad aluminum alloy cables for communication, comprising a testing platform, on which a cable fixing component, a top pressure friction simulation component and a visual detection component are arranged, and two groups of cable fixing components are arranged, and the cable fixing components are used to fix the two ends of the cable sample; The top pressure friction simulation component includes a top pressure frame, which is slidably mounted on the detection table, and a top pressure driver is also installed on the detection table. The top pressure driver is used to drive the top pressure frame to move, and a top pressure detection wheel is rotatably mounted on the end of the top pressure frame. A friction simulation part is installed on the circumferential side wall of the top pressure detection wheel. The top pressure frame is also provided with a friction driver, and the friction driver is used to drive the top pressure detection wheel to rotate; The top pressure detection wheel has a hollow structure, and a plurality 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 installed on the top pressure frame, and the top pressure detection wheel is located at the air suction port of the dust hood.

[0010] 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.

[0011] In a preferred embodiment, a belt-type filling assembly is also provided on the outer side 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 meshed 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.

[0012] In a preferred embodiment, a suction pipe is connected to the dust hood, and the dust hood is connected to an exhaust pump structure. Two groups of auxiliary suction hoods are also arranged on the top pressure frame. The two groups of auxiliary suction hoods are arranged corresponding to the two hypotenuses of the triangle formed by the belt-type filling assembly, and the pipes of the auxiliary suction hoods and the suction pipe are interconnected.

[0013] 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 inside of the top pressure detection wheel and rotates with the top pressure detection wheel. A plurality of 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.

[0014] 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.

[0015] In a preferred embodiment, the cable holder includes an insert sleeve and a locking hoop, the insert sleeve is fixedly mounted on the turntable, the locking hoop is rotatably mounted on the insert sleeve, and a locking structure is provided between the locking hoop and the insert sleeve.

[0016] In a preferred embodiment, a closed cover is installed on the detection platform, and a temperature control system is arranged in the closed cover. The temperature control system includes a heating device, a cooling device and a temperature sensor.

[0017] In a preferred embodiment, a plurality of driving wheels are rotatably provided on the inserting sleeve, the driving wheels are in contact with the outer wall of the cable sample, and a motor structure for driving the driving wheels to rotate is also provided on the inserting sleeve.

[0018] A method for detecting the performance of copper-clad aluminum alloy cables for communication, comprising the following steps: Step 1: Fix the two ends of the cable sample with two sets of cable fixtures respectively, and control the top pressure detection wheel to drive the top pressure frame to move forward, and then cooperate with the moving seat to move, so that the top pressure detection wheel bends the cable sample to form the bending angle required for the test; Step 2: Keep the cable sample at the above angle for a corresponding test time, and use a visual inspection component to detect whether the cable sample is damaged; Step 3: Drive the top pressure detection wheel to rotate a corresponding number of test circles, and determine the depth of the top pressure detection wheel pressed into the sheath layer of the cable sample through the visual detection component; Step 4: Drive the moving 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.

[0019] The beneficial effects of the present invention are as follows: the present invention uses a dust hood to evacuate air from the area near the top pressure detection wheel, and the multiple sets of air slits of the top pressure detection wheel make the top pressure detection wheel 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 air extraction of the dust 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. The detection device provided by the present invention can perform detection in a variety of ways, and is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a top view of the detection status of the cable sample of the present invention.

[0022] Figure 3 It is a schematic diagram of the overall structure of the cable fixing assembly of the present invention.

[0023] Figure 4 It is a cross-sectional view of the detection device of the cable sample of the present invention in the detection state.

[0024] Figure 5 It 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.

[0025] Figure 6 It is a top view of the top pressure detection wheel of the present invention when it cooperates with the cable sample.

[0026] Figure 7 This is a schematic diagram of the structure of the present invention after adding a visual detection component.

[0027] Figure 8 This is a state diagram of a cable sample being comprehensively visually inspected at an initial position after the cable sample is straightened after the friction test of the present invention.

[0028] Fig. 9 This is a schematic diagram of the structure of the improved top pressure friction simulation component of the present invention.

[0029] Fig.10 It is a schematic structural diagram of the belt-type filling assembly of the present invention.

[0030] Fig.11 For the present invention Fig. 9 A-section structure enlarged view.

[0031] Fig.12 It is a schematic diagram of the structure of the cooling air pipe inside the top pressure detection wheel of the present invention.

[0032] Fig.13 The present invention is a flow chart of the detection method.

[0033] The accompanying drawings are marked as follows: 1. test bench; 11. closed cover; 2. cable fixing assembly; 21. movable 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 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

[0034] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here 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. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0035] Refer to the instruction manual Figures 1 to 12A performance testing device for copper-clad aluminum alloy cables for communication, comprising a testing platform 1, on which two sets of cable fixing components 2 are arranged, the cable fixing components 2 are used to fix the two ends of a cable sample 4, and the testing platform 1 is also provided with a top pressure friction simulation component 3, the top pressure friction simulation component 3 is used to top-press and bend the middle part of the cable sample 4, so that the cable sample 4 remains 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 during laying and forms a bend.

[0036] 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 to fix it (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-pressing 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 (refer to the motor screw structure and the hydraulic cylinder structure) for driving the movable seat 21 to slide.

[0037] The top pressure friction simulation component 3 includes a top pressure frame 31, which is slidably installed on the test bench 1, and the sliding direction of the top pressure frame 31 is perpendicular to the sliding direction of the moving 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 surface can be adopted, or a metal structure simulating a steel structure can be adopted. The specific selection depends on the product testing requirements, and a top pressure driver 33 is also installed on the test bench 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, and cooperate with the movement of the two groups of moving seats 21 to press and bend the cable sample 4 to form an attached Figure 4 In the state shown, a friction driver 35 is also provided on the top pressure frame 31, and the friction driver 35 is cooperated 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.

[0038] During actual testing, firstly, the two ends of the cable sample 4 are 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 top pressure, and the two groups of movable seats 21 are synchronously driven to move for adaptation, 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 movement of the top pressure frame 31 and the movable seat 21 to make the cable sample 4 maintain the above-mentioned fixed angle, and within the specified time, detect whether the sheath layer of the cable sample 4 is cracked or damaged. 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 times 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 turns 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, determining the bending duration of the cable sample 4 at a specified angle and determining 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 continuously changing the angle to determine the bending angle that the cable sample 4 can withstand and continuously driving the top pressure detection wheel 32 to rotate to determine 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.

[0039] It should be noted that, in the present 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 as to obtain the top pressure of the top pressure detection wheel 32 on the cable sample 4, and the tension formed on other areas of the cable sample 4 after the top pressure detection wheel 32 forms top pressure on the middle part of the cable sample 4 during actual detection, so as to accurately acquire data of the cable sample 4 and improve the detection accuracy, and adjust the movement of the movable seat 21 and the top pressure frame 31 in real time according to the needs, so as to better meet the detection requirements.

[0040] 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 to affect 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, 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, so that the top pressure detection wheel 32 forms a cage structure, and 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 suction port of the dust hood 34, and the dust hood 34 is connected to an air suction pipe 341, and the dust hood 34 is connected to an air suction pump structure, and then 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 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, thereby avoiding the accumulation of wear materials that affect subsequent detection. At the same time, the air suction of the dust hood 34 can form sufficient airflow around the top pressure detection wheel 32 and in 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.

[0041] 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 detection process, in order to judge the actual performance of the cable sample 4 under the corresponding temperature environment (for example, high temperature or low temperature environment), it is also necessary to control the temperature of the detection environment. Therefore, in this embodiment, a closed cover 11 can be installed on the detection platform 1, and the closed cover 11 is used 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. 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.

[0042] In the above embodiment, the damage degree of the cable sample 4 can be judged by human eyes or by 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 further 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 arranged as at least two groups, and the upper visual recognition camera group 52 is arranged as at least one group (the quantity 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). 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 the cable sample 4 is subjected to a specified bending angle test, 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 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 longitudinal drive 53 is fixedly installed in the closed cover 11, and the longitudinal drive 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 mobile drive structures can also be set between the upper visual recognition camera group 52 and the longitudinal drive 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.

[0043] In the above-mentioned 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 open and are easier to observe). However, since the top pressure detection wheel 32 is still in contact with the cable sample 4 in this state, only 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) can be judged, and 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 insert sleeve 221 and a locking hoop 222. The insert sleeve 221 is fixedly mounted on the turntable 24, and the locking hoop 222 is rotatably mounted on the insert sleeve 221. When installing the cable sample 4, the cable sample 4 is inserted into the insert sleeve 221, and the locking hoop 222 is flipped and engaged with the locking structure on the insert 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.

[0044] A plurality of driving wheels 223 are rotatably provided on the insert sleeve 221, and the driving wheels 223 are used to contact the outer wall of the cable sample 4. The locking hoop insert sleeve 221 is also provided with a motor structure for driving the driving wheels 223 to rotate, so that 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 out, the locking hoop 222 is unlocked, and the driving wheels 223 cooperate with the cable sample 4, and the cable sample 4 is rotated by the driving wheels 223, so that the cable sample 4 rotates after it is straightened out. 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 set to drive the lower visual recognition camera group 51 or the upper visual recognition camera group 52 to reach 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.

[0045] The above driving method for the cable sample 4 is only a simple solution provided in this embodiment. The core is to drive the cable sample 4 to rotate for comprehensive visual identification. Therefore, the cable sample 4 can also be rotated by directly driving the cable fixer 22 to rotate without unlocking the locking hoop 222.

[0046] 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 movement driver 23 to drive the movable seat 21, therefore, in addition to the bending test, the 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 perform sufficient visual recognition detection with the help of the lower visual recognition camera group 51 in the corresponding position.

[0047] Furthermore, in the above-mentioned 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 the friction test. Therefore, this embodiment further improves the top pressure friction simulation component 3. For details, refer to the attached specification. Figures 9 to 12, a belt-type filling assembly 37 is also provided on the outside of the top pressure detection wheel 32, and the belt-type filling assembly 37 includes two groups of belts 371, and the two groups of belts 371 are fixedly connected by multiple groups of filling connecting rods 372, and the filling connecting rods 372 are meshed with the air gap 321 of the top pressure detection wheel 32, and two groups of auxiliary pulleys 373 are rotatably installed on the top pressure frame 31, and the two groups of auxiliary pulleys 373 are adapted to the belts 371, so that the belts 371 and the filling connecting rods 372 are propped up to form a triangular state, and 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 are like a sprocket and a chain, and form a transmission with each other, and in 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 are meshed with each other to fill the air gap 321, so that the top pressure detection wheel 32 directly corresponds to the cable sample 4, a complete contact surface is formed in the area, and no extrusion deformation of the sheath layer of the cable sample 4 is formed, thereby ensuring the effect of the friction test. At the same time, when the top pressure detection wheel 32 and the cable sample 4 are separated, the filling connecting rod 372 gradually leaves the top pressure detection wheel 32, and the air gap 321 within this range is connected. At the same time, a vacant state is formed between the filling connecting rods 372. Therefore, with the help of the vacuum pump 34, the wear materials attached to the top pressure detection wheel 32 and the filling connecting rods 372 can still be fully cleaned to ensure the normal progress of the friction simulation. Moreover, since the filling connecting rods 372 are 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 rods 372, it can also be taken out by the filling connecting rods 372 and then collected by the dust hood 34, thereby further improving the cleanliness of the friction area.

[0048] Furthermore, in order to improve the cleaning effect of the wear material, two sets of auxiliary vacuum hoods 342 are also arranged on the top pressure frame 31. The two sets of auxiliary vacuum hoods 342 respectively 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.

[0049] 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 cable sample 4 at the bend, 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). Frictional heating will affect the test. For this reason, this embodiment also provides the following technical solutions. For details, refer to the attached specification. Fig. 9 and Fig.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 to 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 temperature rise of the top pressure detection wheel 32 on the detection of the cable sample 4.

[0050] Based on the above detection device, the present invention also provides one of the detection schemes. For details, refer to the attached manual. Fig.13 A method for detecting the performance of copper-clad aluminum alloy cables for communication, comprising the following steps: Step 1: fix the two ends of the cable sample 4 to the two sets of cable fixers 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 detection; 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; Step 3: Drive the top pressure detection wheel 32 to rotate the corresponding test number of circles (depending on the detection requirements), and judge the depth of the top pressure detection wheel 32 pressing into the sheath layer of the cable sample 4 through the visual detection component 5 (the deeper the pressure, the more serious the wear); Step 4: Drive the movable seat 21 and the top pressure 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.

[0051] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A performance testing device for copper-clad aluminum alloy cables for communication, comprising a testing platform (1), on which a cable fixing component (2), a top pressure friction simulation component (3) and a visual detection component (5) are arranged, 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-pressing friction simulation component (3) comprises a top-pressing frame (31), the top-pressing frame (31) being slidably mounted on the detection platform (1), and a top-pressing driver (33) being mounted on the detection platform (1), the top-pressing driver (33) being used to drive the top-pressing 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 also provided on the pressure frame (31), the friction driver (35) being used to drive the pressure detection wheel (32) to rotate; The top pressure detection wheel (32) is a hollow structure, and a plurality of groups 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 mounted on the top pressure frame (31), and the top pressure detection wheel (32) is located at the air suction port of the dust hood (34).

2. A performance detection device for the production of copper-clad aluminum alloy cables for communication according to claim 1, characterized in that: 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), wherein 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 movement driver (53), and the longitudinal movement driver (53) is fixedly mounted on the inspection platform (1).

3. A performance detection device for the production of copper-clad aluminum alloy cables for communication according to claim 2, characterized in that: A belt-type filling assembly (37) is also provided on the outside of the top pressure detection wheel (32). The belt-type filling assembly (37) includes two groups of belts (371). The two groups of belts (371) are fixedly connected via a plurality of groups of filling connecting rods (372). The filling connecting rods (372) are meshed 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 component (36) is also fixedly mounted on the outer wall of the belt (371).

4. A performance detection device for production of copper-clad aluminum alloy cables for communication according to claim 3, characterized in that: 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 arranged on the top pressure frame (31). The two groups of auxiliary air suction hoods (342) are arranged corresponding 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.

5. A performance detection device for production of copper-clad aluminum alloy cables for communication according to claim 4, characterized in that: A cooling air pipe (38) is provided inside the top pressure detection wheel (32). 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 via an air pipe.

6. A performance detection device for production of copper-clad aluminum alloy cables for communication according to claim 5, characterized in that: The cable fixing assembly (2) comprises a movable seat (21), the movable seat (21) being slidably arranged on the detection platform (1), the sliding direction of the movable seat (21) being arranged perpendicular to the sliding direction of the top pressure frame (31), the movable seat (21) being provided with a cable fixer (22), the cable fixer (22) being connected to the movable seat (21) via a turntable (24), and the detection platform (1) being further provided with a transverse drive (23) for driving the movable seat (21) to slide.

7. A performance detection device for production of copper-clad aluminum alloy cables for communication according to claim 6, characterized in that: The cable fixer (22) comprises an insert sleeve (221) and a locking hoop (222); the insert sleeve (221) is fixedly mounted on the rotating disk (24); the locking hoop (222) is rotatably mounted on the insert sleeve (221); and a locking structure is provided between the locking hoop (222) and the insert sleeve (221).

8. A performance detection device for production of copper-clad aluminum alloy cables for communication according to claim 7, characterized in that: A closed cover (11) is installed on the detection platform (1), and a temperature control system is arranged inside the closed cover (11), wherein the temperature control system comprises a heating device, a cooling device and a temperature sensor.

9. A performance detection device for production of copper-clad aluminum alloy cables for communication according to claim 8, characterized in that: The insert 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 insert sleeve (221) is also provided with a motor structure for driving the driving wheels (223) to rotate.

10. A detection method for the performance detection device for the production of copper-clad aluminum alloy cables for communication according to claim 9, 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 fixers (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 a bending angle required for detection; Step 2: Keep the cable sample (4) at the above angle for a corresponding test time, and use a visual inspection component (5) to inspect 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) is restored 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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