Aging test machine for wires and cables

Abstract

The present application relates to the technical field of wires and cables, and in particular to an aging tester for wires and cables, including a detection frame, a first cylinder, a sliding plate and a fixed ring, etc.; a plurality of first cylinders are fixedly connected to both sides of the detection frame; the telescopic ends of all the first cylinders on the same side are fixedly connected to a sliding plate; both sliding plates are slidably connected to the detection frame, and the two sliding plates are symmetrically arranged; a fixed ring is respectively passed through the upper part of the two sliding plates, and an annular airbag is arranged inside the two fixed rings. The present invention evaluates the aging process of the cable by regularly checking the condition of the cable; during the inspection, the cable is extended out of the soil, and then the cable is manually inspected using instruments such as a scanning electron microscope to check the aging condition of the cable, and the cable is lifted out of the soil and then inspected using instruments such as a scanning electron microscope to avoid soil interference with the inspection results.

Description

Technical Field

[0001] The present application relates to the technical field of wires and cables, and in particular to an aging tester for wires and cables. Background Art

[0002] In an environment where wires and cables are directly buried underground for a long time, they face the threat of corrosion from the soil. This process will accelerate the aging of the cables, thus affecting their electrical performance and service life. In view of this, it is particularly important to carry out soil corrosion aging tests on cables in order to scientifically evaluate the durability and performance of cables under specific soil conditions. For example, Chinese patent CN109406376A discloses a temperature and humidity adaptive cable aging test device, which uses a scanning electron microscope to examine the corrosion and aging of wires and cables in the soil. However, the soil will interfere with the inspection results, that is, factors such as tiny particles, chemical composition, humidity and microbial activity in the soil will mask the actual aging characteristics of the surface of the wires and cables, thereby affecting the accuracy and reliability of the inspection results. Summary of the invention

[0003] In order to overcome the disadvantage of existing aging test equipment that when the corrosion aging of wires and cables in soil is inspected by scanning electron microscope, the soil will interfere with the inspection result, the present invention provides an aging test machine for wires and cables.

[0004] Technical solution: An aging tester for wires and cables, comprising a detection frame; also comprising a first cylinder, a sliding plate, a fixed ring, a second cylinder and a push plate; a plurality of first cylinders are fixedly connected to both sides of the detection frame; the telescopic ends of all the first cylinders on the same side are commonly fixedly connected to a sliding plate; the two sliding plates are both slidably connected to the detection frame, and the two sliding plates are symmetrically arranged; a fixed ring is respectively passed through the upper part of the two sliding plates, and an annular airbag is arranged inside the two fixed rings; a plurality of second cylinders are fixedly connected to the other two sides of the detection frame; the telescopic ends of all the second cylinders on the same side are commonly fixedly connected to a push plate, and a pushing portion is arranged at the opposite parts of the two push plates; the two push plates are both slidably connected to the detection frame.

[0005] Furthermore, it is particularly preferred that the two fixing rings have bevels on the sides facing each other.

[0006] Furthermore, it is particularly preferred that the pushing portion is arranged in an inclined shape.

[0007] In addition, it is particularly preferred that a filling block is further included; a filling block is fixedly connected to the front part and the rear part of the inner part of the detection frame respectively.

[0008] Furthermore, it is particularly preferred that the upper side of the filling block is arranged in an inclined shape.

[0009] In addition, it is particularly preferred that it also includes a first mounting frame and a power unit; the first mounting frame is fixedly connected to the right side of the detection frame; the power unit is connected to the first mounting frame; the power unit is connected to one of the fixing rings, and the power unit is used to drive the fixing ring to rotate.

[0010] In addition, it is particularly preferred that a scraper is further included; and a scraper is detachably connected to the facing sides of the two push plates.

[0011] In addition, it is particularly preferred that an air guide tube is also included; a plurality of air guide tubes are fixedly connected to the two filling blocks at equal distances, and a filter is arranged on the air guide tube near the center of the detection frame to prevent soil from entering the air guide tube.

[0012] In addition, it is particularly preferred that it also includes a second mounting frame, a third cylinder and a top plate; the second mounting frame is fixedly connected to the lower side of the detection frame; a plurality of third cylinders are fixedly connected to the second mounting frame; the telescopic ends of all the third cylinders are inserted into the detection frame; the telescopic ends of all the third cylinders are commonly fixedly connected to a top plate; the top plate is located in the space formed by the two filling blocks and the detection frame, and the top plate is slidably connected to the two filling blocks, and the top plate is slidably connected to the detection frame.

[0013] In addition, it is particularly preferred that it further includes protrusions; and a plurality of protrusions are fixedly connected to the lower sides of the two scrapers.

[0014] Compared with the prior art, the present invention has the following advantages: 1. The present invention evaluates the aging process of the cable by regularly checking the condition of the cable; during the inspection, the cable is extended out of the soil, and then the cable is manually inspected using instruments such as a scanning electron microscope to check the aging of the cable. The cable is lifted out of the soil and then inspected using instruments such as a scanning electron microscope to avoid soil interference with the inspection results; after the inspection, the cable is returned to the cable pit, and then the two second cylinders are controlled to drive the two push plates to move toward each other, and the pushing parts of the push plates push the soil in front and behind the cable pit back into the cable pit to bury the cable, and thus the cable is subjected to a corrosion aging test again.

[0015] 2. When it is necessary to test the effect of high-temperature soil on the performance and aging process of the cable, the external hot air pump is controlled to pass hot air into the soil through the air duct to heat the soil and increase the soil temperature to test the effect of high-temperature soil on the performance and aging process of the cable; when it is necessary to test the effect of low-temperature soil on the performance and aging process of the cable, the external cold air pump is controlled to pass cold air into the soil through the air duct to cool the soil and reduce the soil temperature to test the effect of low-temperature soil on the performance and aging process of the cable.

[0016] 3. After the cable extends out of the detection frame from the soil, push the soil between the two filling blocks upwards through the top plate so that there is soil on the sides of the two scrapers. Then control the two scrapers to move back to back and scrape the soil on their sides to both sides, that is, to scrape the soil that falls into the cable pit to both sides of the cable. In this way, there is sufficient soil to bury the cable later to avoid the soil above the cable from being in loose contact with the cable, which affects the aging test of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the aging tester for wires and cables of the present invention from a first viewing angle;

[0018] Figure 2 It is a schematic diagram of the stereoscopic structure of the aging tester for wires and cables of the present invention from a second viewing angle;

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the detection frame and the filling block of the aging tester for wires and cables of the present invention;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the third cylinder and the top plate of the aging tester for wires and cables of the present invention;

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the fixing ring of the aging tester for wires and cables of the present invention;

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the scraper and the protrusion of the aging tester for wires and cables of the present invention.

[0023] In the figure: 1-detection frame, 2-first cylinder, 3-sliding plate, 4-fixing ring, 5-second cylinder, 6-push plate, 6a-pushing part, 7-filling block, 21-first mounting frame, 22-motor, 23-gear, 24-gear ring, 25-scraper, 31-second mounting frame, 32-third cylinder, 33-top plate, 34-bump, 35-air duct. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0025] Example 1

[0026] An aging test machine for wires and cables, such as Figure 1-6 As shown, a detection frame 1 is included;

[0027] It also includes a first cylinder 2, a sliding plate 3, a fixed ring 4, a second cylinder 5 and a push plate 6; two first cylinders 2 are fixedly connected to the left and right sides of the detection frame 1 respectively; the telescopic ends of all the first cylinders 2 on the same side are commonly fixedly connected to a sliding plate 3; the two sliding plates 3 are both slidably connected to the detection frame 1, and the two sliding plates 3 are symmetrically arranged; a fixed ring 4 is respectively passed through the upper part of the two sliding plates 3, and an annular airbag is arranged inside the two fixed rings 4; two second cylinders 5 are fixedly connected to the front and rear sides of the detection frame 1 respectively; the telescopic ends of all the second cylinders 5 on the same side are commonly fixedly connected to a push plate 6, and the opposing parts of the two push plates 6 are provided with a pushing part 6a; the two push plates 6 are both slidably connected to the detection frame 1.

[0028] Furthermore, in order to facilitate the insertion of the cable into the fixing ring 4, the two fixing rings 4 are provided with bevels on the sides facing each other.

[0029] Furthermore, in order to press the soil downward when pushing the soil, the pushing portion 6a is arranged to be inclined.

[0030] Furthermore, a filling block 7 is included; a filling block 7 is welded to the front and rear inner parts of the detection frame 1 respectively.

[0031] Furthermore, in order to facilitate the soil to move down close to the cable, the upper side of the filling block 7 is arranged to be inclined.

[0032] The first step: before use, connect the first cylinder 2 and the second cylinder 5 to the external air pump; when in use, put the intercepted detection cable into the detection frame 1, then pass the two ends of the cable through a fixing ring 4 respectively, and then pull the two ends of the cable so that the part of the cable in the detection frame 1 is in a straight state, and then connect the annular air bag inside the fixing ring 4 with the external air pump, control the external air pump to inflate the annular air bag inside the fixing ring 4, and the annular air bag is inflated to clamp and fix the two ends of the cable, and then disconnect the annular air bag inside the fixing ring 4 from the external air pump, and then fill the detection frame 1 with soil so that the soil surrounds the cable. A filling block 7 is welded at the front and rear of the detection frame 1 respectively, and the cable is located between the two filling blocks 7. The two filling blocks 7 fill part of the space of the detection frame 1, which can reduce the use of soil, and the upper side of the filling block 7 is set to be inclined, so that the soil can be close to the cable in the middle, so that the cable is fully in contact with the soil, and the height of the soil is flush with the lower side of the push plate 6, so as to simulate the situation that the cable is buried in the soil, and the corrosion aging test of the cable by the soil is carried out.

[0033] Step 2: Then check the condition of the cable regularly to evaluate the aging process of the cable. During the inspection, the first cylinder 2 is controlled to drive the sliding plate 3, the fixing ring 4 and the cable to move upward so that the cable extends out of the soil. After extending out, a cable pit is left in the detection frame 1, and the soil originally above the cable falls to the front and rear of the cable pit. Then the cable is manually inspected using instruments such as a scanning electron microscope to check the aging of the cable. By lifting the cable out of the soil and then inspecting the cable using instruments such as a scanning electron microscope, the soil is prevented from interfering with the inspection results. After the inspection, the first cylinder 2 is controlled to drive the sliding plate 3, the fixing ring 4 and the cable to move downward and reset so that the cable returns to the cable pit. Then the two second cylinders 5 are controlled to drive the two push plates 6 to move toward each other. The push portion 6a of the push plate 6 pushes the soil in front and behind the cable pit back into the cable pit to bury the cable. In this way, the cable is subjected to corrosion aging test again.

[0034] Example 2

[0035] On the basis of Example 1, Figure 4 and Figure 6 As shown, it also includes a first mounting frame 21 and a power unit; the first mounting frame 21 is welded on the right side of the detection frame 1; the first mounting frame 21 is connected to the power unit; the power unit is connected to one of the fixing rings 4.

[0036] Furthermore, the power unit includes a motor 22, a gear 23 and a gear ring 24; the motor 22 is bolted to the first mounting frame 21; the gear 23 is fixed to the output shaft of the motor 22; the gear ring 24 is fixed to one of the fixing rings 4; the gear 23 is meshed with the gear ring 24.

[0037] Furthermore, a scraper 25 is also included; the two push plates 6 are detachably connected to the opposite sides with a scraper 25 respectively.

[0038] In the second step of Example 1: if the soil used has strong viscosity, after the cable is extended from the soil, part of the soil will adhere to the upper side of the cable, affecting the inspection of the cable; therefore, when the cable is extended, the control motor 22 drives the gear 23 transmission gear ring 24 to rotate, and the gear ring 24 drives the fixed ring 4 and the cable to rotate, and the attached soil is thrown off when the cable rotates; in addition, a scraper 25 is also provided on the push plate 6. Before rotating the cable, the cable is moved between the two push plates 6, and then one of the second cylinders 5 is controlled to drive the push plate 6 and the scraper 25 to move toward the cable so that the scraper 25 contacts the cable, and then the cable is controlled to rotate. When the cable rotates, it passes through the scraper 25, and the scraper 25 scrapes off the soil attached to the cable. After scraping, the cable is stopped from rotating, and then the second cylinder 5 is controlled to drive the push plate 6 and the scraper 25 to move and reset, and then the cable is inspected to avoid the attached soil affecting the inspection.

[0039] Example 3

[0040] On the basis of Example 2, Figure 3-4 As shown, an air guide tube 35 is also included; a plurality of air guide tubes 35 are fixedly connected to the two filling blocks 7 at equal distances, and a filter screen is arranged near the center of the air guide tube 35 and the detection frame 1.

[0041] Furthermore, it also includes a second mounting frame 31, a third cylinder 32 and a top plate 33; the second mounting frame 31 is welded to the lower side of the detection frame 1; two third cylinders 32 are fixedly connected to the second mounting frame 31; the telescopic ends of all the third cylinders 32 are inserted into the detection frame 1; the telescopic ends of all the third cylinders 32 are commonly fixedly connected to a top plate 33; the top plate 33 is located in the space formed by the two filling blocks 7 and the detection frame 1, and the top plate 33 is slidably connected to the two filling blocks 7, and the top plate 33 is slidably connected to the detection frame 1.

[0042] Furthermore, it also includes protrusions 34; a plurality of protrusions 34 are fixedly connected to the lower sides of the two scrapers 25.

[0043] In actual use, cables will encounter various environmental conditions, including extreme temperatures. The temperature of the soil has a significant impact on the performance and aging process of the cable. High-temperature soil will accelerate the rate of chemical reactions, including oxidation, degradation and hydrolysis reactions of cable materials. These reactions will cause the performance of the cable to deteriorate. Low-temperature soil will slow down the aging rate. Therefore, it is necessary to simulate the aging test of the cable under high and low temperature soils; half of the air duct 35 is pre-connected to an external hot air pump, and the other half of the air duct 35 is pre-connected to an external cold air pump. When it is necessary to test the impact of high-temperature soil on the performance and aging process of the cable, the external hot air pump is controlled to pass hot air into the soil through the air duct 35 to heat the soil and increase the soil temperature to test the impact of high-temperature soil on the performance and aging process of the cable; when it is necessary to test the impact of low-temperature soil on the performance and aging process of the cable, the external cold air pump is controlled to pass cold air into the soil through the air duct 35 to cool the soil and reduce the soil temperature to test the impact of low-temperature soil on the performance and aging process of the cable.

[0044] When the soil temperature rises, the moisture in the soil evaporates. The evaporation of moisture means that the moisture originally existing in the soil pores is reduced, resulting in a decrease in the void space between the soil particles, thereby reducing the total volume of the soil. This causes a gap to appear between the lower side of the cable and the soil. The fluidity of the soil is poor. After a gap appears between the lower side of the cable and the soil, the surrounding soil will not fill the gap. This causes the lower side of the cable to not contact the soil, affecting the aging test of the cable. Therefore, after the soil is heated up, the third cylinder 32 is controlled to drive the top plate 33 to move upward, and the top plate 33 drives the soil under the cable to move upward and close to the cable, so that the lower side of the cable is in contact with the soil to avoid affecting the aging test of the cable.

[0045] In the second step of Example 1: when the cable extends out of the soil, a cable pit is left in the detection frame 1, and most of the soil above the cable falls to the front and rear of the cable pit, but some soil will still fall into the cable pit, resulting in less soil for burying the cable later, resulting in loose contact between the soil above the cable and the cable, affecting the aging test of the cable; therefore, after the cable extends out of the soil from the detection frame 1, the two second cylinders 5 are controlled to drive the two push plates 6 to move toward each other, and the two push plates 6 drive the two scrapers 25 to move toward each other, so that the two scrapers 25 contact each other, and then the third cylinder 32 is controlled to drive the top plate 33 to move upward, and the top plate 33 pushes the soil between the two filling blocks 7 upward, Make sure that there is soil on the sides of the two scrapers 25, and then control the two second cylinders 5 to drive the two push plates 6 to move back to back, and the two push plates 6 drive the two scrapers 25 to move back to back, and the two scrapers 25 move back to back to scrape the soil on their sides to both sides, that is, the soil that falls into the cable pit is scraped to both sides of the cable, and a number of protrusions 34 are fixed to the lower side of the two scrapers 25 to increase the friction with the soil to facilitate scraping the soil, and then control the third cylinder 32 to drive the top plate 33 to move downward and reset, and control the two second cylinders 5 to drive the two push plates 6 to move back to back and reset, so that there is sufficient soil for burying the cable later, avoiding the soil above the cable from being in loose contact with the cable, which affects the aging test of the cable.

[0046] Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation shall fall within the protection scope of the present invention.

Claims

1. An aging tester for wires and cables, comprising a detection frame (1); wherein: It also comprises a first cylinder (2), a sliding plate (3), a fixing ring (4), a second cylinder (5) and a push plate (6); a plurality of first cylinders (2) are fixedly connected to both sides of the detection frame (1); the telescopic ends of all the first cylinders (2) on the same side are fixedly connected to a sliding plate (3); the two sliding plates (3) are slidably connected to the detection frame (1), and the two sliding plates (3) are symmetrically arranged; a fixing ring (4) is respectively passed through the upper part of the two sliding plates (3), and an annular air bag is arranged inside the two fixing rings (4); a plurality of second cylinders (5) are fixedly connected to the other two sides of the detection frame (1); the telescopic ends of all the second cylinders (5) on the same side are fixedly connected to a push plate (6), and the opposing parts of the two push plates (6) are provided with a pushing part (6a); the two push plates (6) are slidably connected to the detection frame (1); It also includes a filling block (7); a filling block (7) is fixedly connected to the front and rear inner portions of the detection frame (1); The apparatus further comprises a second mounting frame (31), a third cylinder (32) and a top plate (33); the second mounting frame (31) is fixedly connected to the lower side of the detection frame (1); a plurality of third cylinders (32) are fixedly connected to the second mounting frame (31); the telescopic ends of all the third cylinders (32) penetrate into the detection frame (1); the telescopic ends of all the third cylinders (32) are commonly fixedly connected to a top plate (33); the top plate (33) is located in a space formed by two filling blocks (7) and the detection frame (1), and the top plate (33) is slidably connected to the two filling blocks (7), and the top plate (33) is slidably connected to the detection frame (1).

2. An aging tester for wires and cables according to claim 1, characterized in that: The two fixing rings (4) are provided with beveled angles on the facing sides.

3. An aging tester for wires and cables according to claim 1, characterized in that: The pushing portion (6a) is arranged in an inclined shape.

4. An aging tester for wires and cables according to claim 1, characterized in that: The upper side of the filling block (7) is arranged in an inclined shape.

5. The aging tester for wires and cables according to claim 1, characterized in that: It also includes a first mounting frame (21) and a power unit; the first mounting frame (21) is fixedly connected to the right side of the detection frame (1); the first mounting frame (21) is connected to the power unit; the power unit is connected to one of the fixing rings (4), and the power unit is used to drive the fixing ring (4) to rotate.

6. An aging tester for wires and cables according to claim 5, characterized in that: It also includes a scraper (25); the two push plates (6) are each detachably connected to the facing sides thereof with a scraper (25).

7. An aging tester for wires and cables according to claim 6, characterized in that: It also includes an air guide tube (35); a plurality of air guide tubes (35) are fixedly connected at equal distances in the two filling blocks (7); a filter screen is provided on the air guide tube (35) near the center of the detection frame (1) to prevent soil from entering the air guide tube (35).

8. An aging tester for wires and cables according to claim 7, characterized in that: It also includes protrusions (34); a plurality of protrusions (34) are fixedly connected to the lower sides of the two scrapers (25).

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