A device for detecting the anti-pulling performance of a power cable

Abstract

The utility model discloses a kind of electric power cable tensile performance detection devices, including tensile strength detector, the front end of tensile strength detector is provided with protective structure, the protective structure includes protective baffle, toughened glass, driving shaft, first support frame, second support frame, driving arm, first fixed shaft, hydraulic ram, second fixed shaft, first mounting sleeve, second mounting sleeve and rectangular rubber ring, and the protective baffle is located at the front end of tensile strength detector, the left side of the protective baffle is provided with arc chamfer.The utility model said a kind of electric power cable tensile performance detection devices, by the protective structure of being set, it is convenient to protect the front of tensile strength detector, improve security, rectangular rubber ring is provided on the back of protective baffle, further improve the protective property.

Description

Technical Field

[0001] This utility model relates to the field of power cable tensile performance testing technology, specifically a power cable tensile performance testing device. Background Technology

[0002] As a crucial carrier of electrical energy, the mechanical properties of power cables, especially their tensile strength, directly affect the safe and stable operation of the power grid. Tensile strength testing is a key step in evaluating cable quality during production, laying, and use. Tensile strength testers, by simulating the tensile process of a cable under stress, can accurately measure parameters such as its breaking strength and elongation, providing important information for cable selection and application.

[0003] However, existing tensile strength testing instruments generally have the following drawbacks: 1. Significant safety hazards: The front end of traditional testing instruments is usually an open structure. When the cable breaks under extreme tension, the broken cable or flying debris may be ejected at high speed from the testing area, posing a safety threat to operators and surrounding equipment. 2. The protective function is not strong. Although some improvement solutions have added simple baffles, they lack a dynamic opening and closing mechanism, which leads to frequent manual adjustment of the protective device during operation, affecting the detection efficiency. In addition, there is often a gap between the existing baffle and the main body of the detector, which cannot effectively block the splashing of fine debris.

[0004] Therefore, we propose a device for testing the tensile strength of power cables. Utility Model Content

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a device for testing the tensile strength of power cables, which has a protective function, improves safety during testing, and can effectively solve the problems in the background technology.

[0006] (II) Technical Solution To achieve the above objectives, the technical solution adopted by this utility model is as follows: a device for testing the tensile strength of power cables, including a tensile strength tester. The front end of the tensile strength tester is provided with a protective structure, which includes a protective baffle, tempered glass, a drive shaft, a first support frame, a second support frame, a drive arm, a first fixed shaft, a hydraulic rod, a second fixed shaft, a first mounting sleeve, a second mounting sleeve, and a rectangular rubber ring. The protective baffle is located at the front end of the tensile strength tester, and the left side of the protective baffle is provided with an arc-shaped chamfer.

[0007] Preferably, the tempered glass is fixed in the middle of the protective baffle.

[0008] Preferably, the drive shaft extends vertically through the left side of the protective baffle, and the first support frame is connected to the lower outer surface of the drive shaft, the second support frame is installed on the upper outer wall of the drive shaft, the first support frame is located at the bottom left side of the outer surface of the front end of the tensile strength tester, and the second support frame is fixed at the upper left side of the outer surface of the front end of the tensile strength tester.

[0009] Preferably, bearings are provided between the drive shaft and the first support frame and the second support frame, and the drive shaft is rotatably connected to the first support frame and the second support frame through the bearings.

[0010] Preferably, the protective baffle has an annular groove on its back edge, and the rectangular rubber ring is fixedly fitted into the annular groove by interference fit; when the protective baffle is closed, the compression deformation of the rectangular rubber ring is 15%-20% of its free thickness, forming an elastic sealing interface between the protective baffle and the front face of the tensile strength tester.

[0011] Preferably, one end of the drive arm is fixedly connected to the outer wall of the top of the drive shaft, the first fixed shaft is fixed to the upper outer surface of the drive arm away from the drive shaft, the second mounting sleeve is fixed to the outer surface of one end of the piston rod in the hydraulic rod, the first mounting sleeve is fixed to the outer surface of the rear end of the cylinder in the hydraulic rod, the second fixed shaft is fixed to the upper outer surface of the tensile strength tester, a bearing is provided between the second mounting sleeve and the first fixed shaft, and the second mounting sleeve is rotatably connected to the outer wall of the first fixed shaft through the bearing, and a bearing is provided between the first mounting sleeve and the second fixed shaft, and the first mounting sleeve is rotatably connected to the outer wall of the second fixed shaft through the bearing.

[0012] (III) Beneficial Effects Compared with the prior art, this utility model provides a device for testing the tensile strength of power cables, which has the following advantages: 1. This power cable tensile strength testing device, by setting a protective baffle that can be dynamically opened and closed, can close the front open area of ​​the tensile strength tester during the testing process, effectively blocking the flying debris generated when the cable breaks, reducing the risk of injury to operators and damage to equipment. The tempered glass embedded in the middle of the protective baffle not only ensures the clarity of the observation field, but also has high impact resistance, further improving the reliability of protection.

[0013] 2. The device for testing the tensile strength of power cables has a rectangular rubber ring on the back edge of the protective baffle. The ring is inserted with an interference fit to form an elastic sealing interface in the closed state. Its compression deformation (15%-20% of the free thickness) can effectively absorb impact vibration and completely prevent debris from splashing out from the gap. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a power cable tensile strength testing device according to the present invention.

[0015] Figure 2 This is a schematic diagram of the protective structure in a power cable tensile strength testing device according to the present invention.

[0016] Figure 3 This is a partial structural diagram of the protective structure in the power cable tensile strength testing device of this utility model.

[0017] Figure 4 This is a top cross-sectional view of the protective baffle in the power cable tensile performance testing device of this utility model.

[0018] In the figure: 1. Tensile strength tester; 2. Protective structure; 3. Protective baffle; 4. Tempered glass; 5. Drive shaft; 6. First support frame; 7. Second support frame; 8. Drive arm; 9. First fixed shaft; 10. Hydraulic rod; 11. Second fixed shaft; 12. First mounting sleeve; 13. Second mounting sleeve; 14. Rectangular rubber ring. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] This embodiment is a device for testing the tensile strength of power cables.

[0021] like Figure 1-4 As shown, the device includes a tensile strength tester 1, and a protective structure 2 is provided at the front end of the tensile strength tester 1. The protective structure 2 includes a protective baffle 3, tempered glass 4, a drive shaft 5, a first support frame 6, a second support frame 7, a drive arm 8, a first fixed shaft 9, a hydraulic rod 10, a second fixed shaft 11, a first mounting sleeve 12, a second mounting sleeve 13, and a rectangular rubber ring 14. The protective baffle 3 is located at the front end of the tensile strength tester 1, and an arc-shaped chamfer is provided on the left side of the protective baffle 3.

[0022] Tempered glass 4 is fixed in the middle of the protective baffle 3; the drive shaft 5 vertically penetrates the left side of the protective baffle 3, and the first support frame 6 is connected to the lower outer surface of the drive shaft 5, and the second support frame 7 is installed on the upper outer wall of the drive shaft 5. The first support frame 6 is located at the bottom left side of the front outer surface of the tensile strength tester 1, and the second support frame 7 is fixed at the upper left side of the front outer surface of the tensile strength tester 1; bearings are provided between the drive shaft 5 and the first support frame 6 and the second support frame 7, and the drive shaft 5 is rotatably connected to the first support frame 6 and the second support frame 7 through the bearings; the back edge of the protective baffle 3 is provided with an annular groove, and the rectangular rubber ring 14 is fixedly embedded in the annular groove by interference fit; when the protective baffle 3 is closed, the compression deformation of the rectangular rubber ring 14 is 15% of its free thickness. -20% forms an elastic sealing interface between the protective baffle 3 and the front end face of the tensile strength tester 1; one end of the drive arm 8 is fixedly connected to the outer wall of the top of the drive shaft 5; the first fixed shaft 9 is fixed on the upper outer surface of the drive arm 8 away from the drive shaft 5; the second mounting sleeve 13 is fixed on the outer surface of one end of the piston rod in the hydraulic rod 10; the first mounting sleeve 12 is fixed on the rear outer surface of the cylinder in the hydraulic rod 10; the second fixed shaft 11 is fixed on the upper outer surface of the tensile strength tester 1; a bearing is provided between the second mounting sleeve 13 and the first fixed shaft 9; the second mounting sleeve 13 is rotatably connected to the outer wall of the first fixed shaft 9 through the bearing; a bearing is provided between the first mounting sleeve 12 and the second fixed shaft 11; the first mounting sleeve 12 is rotatably connected to the outer wall of the second fixed shaft 11 through the bearing.

[0023] It should be noted that this utility model is a device for testing the tensile strength of power cables. The tensile strength tester 1 described in this article belongs to the prior art and can be effectively known to those skilled in the art. Further details will not be elaborated here. The protective structure 2 is configured such that the driving arm 8 rotates around the top of the driving shaft 5 via the operation of the hydraulic rod 10. The driving arm 8 is fixedly connected to the top of the driving shaft 5. Therefore, the driving arm 8 drives the driving shaft 5 to rotate, and the driving shaft 5 drives the protective baffle 3 to flip, thus opening and closing the protective baffle 3. During testing, the protective baffle 3 protects the front end of the tensile strength tester 1. During loading and unloading, the baffle 3 flips open, and after being closed by the hydraulic rod 10, the rectangular rubber ring 14 is pressed between the back of the protective baffle 3 and the front end of the tensile strength tester 1 for sealing protection, further improving protection and preventing debris from splashing out from the gap.

[0024] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A device for testing the tensile strength of power cables, comprising a tensile strength tester (1), characterized in that: The front end of the tensile strength tester (1) is provided with a protective structure (2). The protective structure (2) includes a protective baffle (3), tempered glass (4), drive shaft (5), first support frame (6), second support frame (7), drive arm (8), first fixed shaft (9), hydraulic rod (10), second fixed shaft (11), first mounting sleeve (12), second mounting sleeve (13) and rectangular rubber ring (14). The protective baffle (3) is located at the front end of the tensile strength tester (1), and the left side of the protective baffle (3) is provided with an arc chamfer.

2. The device for testing the tensile strength of power cables according to claim 1, characterized in that: The tempered glass (4) is fixed in the middle of the protective baffle (3).

3. The device for testing the tensile strength of power cables according to claim 2, characterized in that: The drive shaft (5) extends vertically through the left side of the protective baffle (3), and the first support frame (6) is connected to the lower outer surface of the drive shaft (5). The second support frame (7) is installed on the upper outer wall of the drive shaft (5). The first support frame (6) is located at the bottom left side of the front outer surface of the tensile strength tester (1), and the second support frame (7) is fixed at the upper left side of the front outer surface of the tensile strength tester (1).

4. The device for testing the tensile strength of power cables according to claim 3, characterized in that: Bearings are provided between the drive shaft (5) and the first support frame (6) and the second support frame (7), and the drive shaft (5) is rotatably connected to the first support frame (6) and the second support frame (7) through the bearings.

5. The device for testing the tensile strength of power cables according to claim 4, characterized in that: The protective baffle (3) has an annular groove on its back edge, and the rectangular rubber ring (14) is fixedly embedded in the annular groove by interference fit; when the protective baffle (3) is closed, the compression deformation of the rectangular rubber ring (14) is 15%-20% of its free thickness, forming an elastic sealing interface between the protective baffle (3) and the front end face of the tensile strength tester (1).

6. The device for testing the tensile strength of power cables according to claim 5, characterized in that: One end of the drive arm (8) is fixedly connected to the outer wall of the top of the drive shaft (5). The first fixed shaft (9) is fixed on the upper outer surface of the drive arm (8) away from the drive shaft (5). The second mounting sleeve (13) is fixed on the outer surface of one end of the piston rod in the hydraulic rod (10). The first mounting sleeve (12) is fixed on the outer surface of the rear end of the cylinder in the hydraulic rod (10). The second fixed shaft (11) is fixed on the upper outer surface of the tensile strength tester (1). A bearing is provided between the second mounting sleeve (13) and the first fixed shaft (9). The second mounting sleeve (13) is rotatably connected to the outer wall of the first fixed shaft (9) through the bearing. A bearing is provided between the first mounting sleeve (12) and the second fixed shaft (11). The first mounting sleeve (12) is rotatably connected to the outer wall of the second fixed shaft (11) through the bearing.

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