Cable mechanical strength testing device
The cable mechanical strength testing device, which uses a tapered clamp and a sliding ring structure, solves the problem of inaccurate testing caused by loose clamps, and achieves stable clamping and accurate data during the testing process.
Patent Information
- Application Number
- CN202520056687.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-01-10
AI Technical Summary
In traditional cable mechanical strength testing, the clamps may loosen or fall off due to a decrease in clamping force, resulting in inaccurate test results or even cable breakage.
It adopts a gradually tapered chuck and sliding ring structure. The outer wall of the chuck is gradually tapered, and the sliding ring slides on the outer wall of the chuck to automatically increase the clamping force and ensure the cable is fixed. It includes a combination design of chuck with locking structure, sliding ring, support column and connecting plate.
Ensure that the cable is firmly clamped throughout the testing process to prevent loosening and detachment, thereby improving the accuracy and security of test data and extending the service life of the device.
Smart Images
Figure CN223808254U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to cable test technical field, especially a kind of cable mechanical strength testing device. BACKGROUND
[0002] In modern electric power, communication and many other fields, as the key carrier of electric energy and signal transmission, the mechanical strength of cable is directly related to the stability and reliability of the whole system. For example, in the power transmission network, high-voltage transmission line needs to bear the weight of self, wind force, icing and other external forces for a long time; in the communication field, a large number of communication cables are laid in complex environment, and are tested under different working conditions such as stretching, bending and vibration. With the rapid development of these industries, the mechanical performance requirements for cables are becoming increasingly stringent.
[0003] In the related art, the mechanical strength of the cable is tested by clamping the cable with clamps on the stretching mechanism, and the cable is stretched by lifting the stretching mechanism to detect the maximum tensile force and other data that the cable can withstand.
[0004] However, the above test method has the following problems. Since the commonly used clamps are fixed clamping force collets, once the cable is stretched due to stress during testing, the diameter of the cable becomes smaller, the traditional clamps become loose, the test results are inaccurate, and even the clamps fall off, causing the cable to burst out. UTILITY MODEL CONTENTS
[0005] The utility model aims to solve one of the above technical problems at least to some extent.
[0006] To achieve the above purpose, the utility model provides a cable mechanical strength testing device, which comprises a test mechanism and a control console, the test mechanism is electrically connected with the control console, and further comprises a locking structure, wherein two locking structures are respectively locked at both ends of the cable, one of the locking structures is arranged on the lifting end of the test mechanism, and the other locking structure is fixedly arranged on the bottom of the test mechanism; each locking structure comprises a collet, a sliding ring, a support column and a connecting plate, wherein two collets are oppositely arranged on the outer side of the cable and are locked by bolts to clamp the cable; the inner wall of the collet is in close contact with the outer wall of the cable, the outer wall of the collet is a tapered structure, and expands linearly from one side close to the center of the cable to the other side; the sliding ring is sleeved on the outer wall of the two collets and abuts on the outer wall of the collet; the support column is arranged on the outer ring of the sliding ring and extends away from the center of the cable; the connecting plate is arranged on the extension end of the support column; wherein one of the connecting plates of the two locking structures is connected with the lifting end of the test mechanism, and the other is arranged on the bottom of the test mechanism.
[0007] In addition, the cable mechanical strength testing device according to the above-mentioned utility model can have the following additional technical features:
[0008] As a further description of the above technical solution: the first blocking end is arranged on one side of the collet close to the center of the cable, and the second blocking end is arranged on the other side, so as to block the sliding ring from falling off the collet.
[0009] As a further description of the above technical solution: the two sides of the collet are respectively provided with an extension part, and a mounting hole is formed in the extension part, and the bolt passes through the corresponding mounting hole to lock the two collets.
[0010] As a further description of the above technical solution: the inner wall of the collet is provided with a rubber anti-skid layer, and the surface of the rubber anti-skid layer is provided with uniformly distributed anti-skid lines to increase the friction between the cable.
[0011] As a further description of the above technical solution: the inner ring of the sliding ring is attached to the outer wall of the collet.
[0012] As a further description of the above technical solution: the sliding ring, the support column and the connecting plate are all welded together.
[0013] As a further description of the above technical solution: the outer wall of the collet is provided with a scale mark.
[0014] According to the cable mechanical strength testing device of the utility model, when the cable is stretched and becomes longer and thinner, the sliding ring can freely slide on the outer wall of the collet. Since the outer wall of the collet is a tapered structure, the sliding of the sliding ring will cause the two collets to approach each other, thereby automatically increasing the clamping force on the cable, ensuring that the cable is always firmly fixed in the locking structure and will not fall off due to the decrease of the clamping force.
[0015] The additional aspects and advantages of the utility model will be partially given in the following description, some will become apparent from the following description, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS
[0016] The above and / or additional aspects and advantages of the utility model will become apparent and easily understood from the following description of the embodiments, combined with the accompanying drawings, in which:
[0017] Figure 1 is a structural schematic view of a cable mechanical strength testing device according to an embodiment of the utility model;
[0018] Figure 2 is a schematic view of a locking structure according to an embodiment of the utility model;
[0019] Figure 3 Figure 1 is a schematic diagram of a connection structure of a locking structure and a cable according to an embodiment of the present application;
[0020] Figure 4 Figure 2 is a front view schematic diagram of a connection structure of a locking structure and a cable according to an embodiment of the present application;
[0021] Figure 5 Figure 3 is a sectional view along A-A according to an embodiment of the present application;
[0022] Figure 6 Figure 4 is a side view schematic diagram of a connection structure of a locking structure and a cable according to an embodiment of the present application;
[0023] Figure 7 Figure 5 is a sectional view along B-B according to an embodiment of the present application;
[0024] Figure 8 Figure 6 is an enlarged schematic diagram of a partial C according to an embodiment of the present application;
[0025] As shown in the drawings:
[0026] 100, test mechanism; 200, control console; 300, locking structure; 310, chuck; 311, first blocking end; 312, second blocking end; 313, extension; 314, bolt; 320, sliding ring; 330, support column; 340, connecting plate; 400, cable. DETAILED DESCRIPTION
[0027] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.
[0028] The cable mechanical strength testing device of the embodiment of the present application is described below in conjunction with the drawings.
[0029] As shown in the drawings, Figure 1 The cable mechanical strength testing device of the embodiment of the present application can include a test mechanism 100 and a control console 200, and the test mechanism 100 is electrically connected to the control console 200.
[0030] Further comprising a locking structure 300, wherein two locking structures 300 are respectively locked at both ends of the cable 400, one of the locking structures 300 is arranged on the lifting end of the test mechanism 100, and the other locking structure 300 is fixedly arranged at the bottom of the test mechanism 100.
[0031] AsFigures 2 to 8 As shown, each locking structure 300 comprises a clamp head 310, a sliding ring 320, a support column 330 and a connecting plate 340.
[0032] Among them, two clamp heads 310 are oppositely arranged outside the cable 400 and are locked by bolts 314 to clamp the cable 400. The inner wall of the clamp head 310 is in close contact with the outer wall of the cable 400. The outer wall of the clamp head 310 is a tapered structure, which expands linearly from one side close to the center of the cable 400 to the other side.
[0033] The sliding ring 320 is sleeved outside the two clamp heads 310 and abuts against the outer wall of the clamp head 310. The support column 330 is arranged on the outer ring of the sliding ring 320 and extends away from the center of the cable 400. The connecting plate 340 is arranged on the extended end of the support column 330.
[0034] Among them, one of the connecting plates 340 of the two locking structures 300 is connected to the lifting end of the test mechanism 100, and the other is arranged at the bottom of the test mechanism 100.
[0035] Specifically, when the relevant staff tests the strength of the cable 400, first, place the two ends of the cable 400 between the clamp heads 310 of the two locking structures 300 respectively, adjust the position, and then tighten the two oppositely arranged clamp heads 310 by using the bolts 314. At this time, the inner wall of the clamp head 310 is in close contact with the outer wall of the cable 400.
[0036] Then, the relevant staff controls the lifting end of the test mechanism 100 to preliminarily lift, and keeps the cable 400 in a taut state. At this time, due to the movement of the lifting end of the test mechanism 100, the moving plate drives the support frame and the sliding ring 320 to move, so that the sliding ring 320 is sleeved outside the clamp head 310 and abuts against the outer wall thereof.
[0037] Then, the relevant staff continues to control the lifting end of the test mechanism 100 to lift. As the pulling force continues to increase, the cable 400 gradually produces material extension, the length becomes longer and the diameter becomes smaller. Since the outer wall of the clamp head 310 is a tapered structure, when the diameter becomes smaller, the sliding ring 320 abuts against the clamp head 310, which can slide on the outer wall of the clamp head 310 to keep the two extrusion clamp heads 310 in close contact with each other, so that the clamp head 310 is always pressed on the cable 400, compensating for the weakened fixing effect due to the thinning of the cable 400.
[0038] Until the cable 400 reaches the ultimate pulling force, the whole mechanical strength test process is completed, and during the process, the test mechanism 100 will feed back the test data to the console 200 in real time.
[0039] In an embodiment of the utility model, the first blocking end 311 is arranged on one side of the clamp head 310 close to the center of the cable 400, and the second blocking end 312 is arranged on the other side, so as to prevent the sliding ring 320 from falling off the clamp head 310.
[0040] It should be noted that, from the convenience of operation and the durability of the device, the arrangement of the first blocking end 311 and the second blocking end 312 simplifies the daily maintenance and use process of the device, and the operator does not need to worry about the loss and misplacement of the clamp head 310, which reduces the complexity of equipment debugging and pre-checking, avoids the wear of the clamp head 310 or other components caused by frequent reinstallation and calibration of the sliding ring 320, and prolongs the service life of the entire locking structure 300.
[0041] In an embodiment of the utility model, the two sides of the clamp head 310 are respectively provided with an extension 313, and a mounting hole is formed in the extension 313. A bolt 314 passes through the corresponding mounting hole to lock the two clamp heads 310.
[0042] It should be noted that, by connecting the two clamp heads 310 with the bolt 314, the initial clamping force can be controlled more accurately. When the bolt 314 is tightened, the degree of mutual approach of the two clamp heads 310 is controllable, thereby adjusting the initial clamping degree of the cable 400. Different specifications and materials of the cable 400 require different clamping forces at the initial testing stage. This design meets this demand, making the device flexible to cope with various cable testing and widening the application range of the testing device.
[0043] In an embodiment of the utility model, a rubber anti-skid layer is arranged on the inner wall of the clamp head 310, and the surface of the rubber anti-skid layer is provided with uniformly distributed anti-skid lines to increase the friction between the clamp head 310 and the cable 400.
[0044] It should be noted that the rubber anti-skid layer on the inner wall of the clamp head 310 is provided with uniformly distributed anti-skid lines, which can significantly improve the friction between the clamp head 310 and the cable 400. At the initial testing stage, when the clamp head 310 just clamps the cable 400, it can avoid displacement of the cable 400 in the clamp head 310 due to slight shaking, vibration or slight deviation during installation. Compared with the ordinary smooth inner wall of the clamp head 310, the additional friction provided by the rubber anti-skid layer can effectively reduce the risk of initial clamping failure and ensure that the test is in a stable state from the beginning.
[0045] In an embodiment of the utility model, the inner ring of the sliding ring 320 is tightly attached to the outer wall of the clamp head 310.
[0046] It should be noted that the tight attachment design makes the sliding process of the sliding ring 320 on the outer wall of the clamp head 310 more smooth and stable, avoiding shaking, jamming and other unstable phenomena.
[0047] When the cable 400 is in the test and the diameter is reduced due to the force, the sliding ring 320 can quickly push the clamp head 310, and due to the close fit, it can ensure that the subsequent promotion of the two clamp heads 310 to approach each other and automatically increase the clamping force is more smooth, and the cable 400 is maximally guaranteed to be firmly clamped throughout the test, and the accuracy of the test data is maintained.
[0048] In an embodiment of the present application, the sliding ring 320, the support column 330 and the connecting plate 340 are all connected by welding.
[0049] It should be noted that the sliding ring 3200, the support column 330 and the connecting plate 340 are connected by welding, and in the process of testing the mechanical strength of the cable 400, the entire locking structure 300 needs to withstand complex and variable forces, including tensile force generated by the cable 400 stretching, impact force caused by vibration, etc. The welded connection has no loose parts, compared with bolt connection, riveting and other methods, it can more effectively resist these external forces and prevent the adaptive clamping function from failing due to loose connection parts.
[0050] In an embodiment of the present application, the outer wall of the clamp head 310 is provided with a scale mark.
[0051] It should be noted that the relevant staff can determine the change of the diameter of the cable 400 by the position of the sliding ring 320 abutting on the clamp head 310, and can intuitively judge the diameter of the cable 400 by observing the scale mark.
[0052] In summary, according to the cable 400 mechanical strength testing device of the embodiment of the present application, when the cable 400 is stretched and becomes longer and thinner, the sliding ring 320 can freely slide on the outer wall of the clamp head 310. Since the outer wall of the clamp head 310 is a tapered structure, the sliding of the sliding ring 320 will cause the two clamp heads 310 to approach each other, thereby automatically increasing the clamping force on the cable, ensuring that the cable 400 is always firmly fixed in the locking structure 300 and will not fall off due to the decrease of the clamping force.
[0053] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.
[0054] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.
[0055] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.
Claims
1. A cable mechanical strength testing apparatus comprising a testing mechanism (100) and a control console (200), the testing mechanism (100) being electrically connected to the control console (200), characterized in that, Also include locking structure (300), wherein, Two said locking structure (300) is locked in the two ends of the cable (400), one of said locking structure (300) is arranged in the lifting end of the test mechanism (100), the other said locking structure (300) is fixedly arranged in the bottom of the test mechanism (100); Each said locking structure (300) includes chuck (310), sliding ring (320), support column (330) and connecting plate (340), wherein, Two said chuck (310) is arranged on the outside of the cable (400) and is locked by bolt (314) to clamp the cable (400); The inner wall of the chuck (310) is in contact with the outer wall of the cable (400), the outer wall of the chuck (310) is a tapered structure, and expands linearly from one side close to the center of the cable (400) to the other side; The sliding ring (320) is sleeved on the outside of the two chucks (310) and abuts against the outer wall of the chuck (310); The support column (330) is arranged on the outer ring of the sliding ring (320) and extends away from the center of the cable (400); The connecting plate (340) is arranged on the extension end of the support column (330); Among the connecting plates (340) of the two said locking structure (300), one is connected with the lifting end of the test mechanism (100), and the other is arranged in the bottom of the test mechanism (100).
2. The cable mechanical strength testing apparatus as recited in claim 1, wherein The chuck (310) is provided with a first blocking end (311) close to the center of the cable (400) and a second blocking end (312) on the other side to prevent the sliding ring (320) from falling off the chuck (310).
3. The cable mechanical strength testing apparatus as recited in claim 1, wherein The chuck (310) is provided with an extension (313) on each side, and a mounting hole is formed in the extension (313), and the bolt (314) passes through the corresponding mounting hole to lock the two chucks (310).
4. The cable mechanical strength testing apparatus as recited in claim 1, wherein The inner wall of the chuck (310) is provided with a rubber anti-skid layer, and the surface of the rubber anti-skid layer is provided with uniformly distributed anti-skid lines to increase the friction between the cable (400).
5. The cable mechanical strength testing apparatus as recited in claim 1, wherein, The inner ring of the sliding ring (320) is in contact with the outer wall of the chuck (310).
6. The cable mechanical strength testing apparatus as recited in claim 1, wherein The sliding ring (320), the support column (330) and the connecting plate (340) are welded together.
7. The cable mechanical strength testing apparatus as recited in claim 1, wherein The outer wall of the chuck (310) is provided with a scale mark.