Tensile test device for power line

Abstract

The utility model discloses a tensile test device for a power line, which comprises a test base, an adaptive clamp holder and a lever lifting seat, a lifting table is slidably mounted on the surface of the test base, the lever lifting seat is rotatably mounted at the top end of the test base, the bottom surface of one side of the lever lifting seat is rotatably connected with a tension meter, and the bottom surface of the other side of the lever lifting seat is rotatably connected with the adaptive clamp holder. The bottom end of the tension meter is movably connected with the top surface of the lifting table, and a driving rod is movably mounted on one side of the testing base. According to the utility model, the combination of the lever lifting seat and the tension meter is adopted, the lever lifting seat amplifies the applied force through the force arm, so that the tension at the end of the driving rod is increased, and the micro tensile deformation of the power line can be monitored through the expansion and contraction amount of the driving rod under a smaller deformation effect through the proportional relation of the lever; according to the design, even under the condition of large load, the tension test can keep high precision, and the measurement error possibly occurring when large torque is directly applied is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to power line test technical field, concretely is a kind of power line tensile test device. BACKGROUND

[0002] The existing power line tensile test device usually adopts fixed holder and directly applies tension to carry out the tensile test of power line.The conventional device mostly applies tension through mechanical arm or hydraulic system, and the tensile property of power line is tested by direct tensile force in the test process.Power line head is usually clamped by chuck structure and fixed on test platform.The conventional holder structure is mostly simple mechanical clamp, and clamping force is controlled by external pressure or spring, and tension is usually applied to power line by external hydraulic system or electric system.

[0003] However, the prior art scheme has some defects in application, especially in the process of testing high-precision tensile force, the test result can have large error due to insufficient clamping or insufficient accuracy of measuring system.Especially in heavy load test, direct tension application in conventional device often leads to increased measurement error, and in the case of insufficient clamping force, power line can slide or fall off, affecting the accuracy and reliability of test.In addition, the conventional clamping structure often cannot be self-adaptively adjusted according to the shape and characteristics of power line, so it is difficult to maintain good clamping effect, especially in the tensile process of power line, the increase and adjustment of clamping force are not flexible enough, which can easily lead to uneven clamping force distribution.

[0004] Therefore, the existing problems are researched and improved, and a power line tensile test device is provided to solve the existing problems, so as to solve the problems and improve the practical value. INVENTION CONTENTS

[0005] The utility model provides a kind of power line tensile test device, to provide a kind of more accurate and reliable power line tension test mode.The device can effectively improve test accuracy and clamping stability by improved lever amplification device, self-adaptive clamping structure and other related design, especially suitable for high load test environment.

[0006] A kind of power line tensile test device, comprising: test base, adaptive holder and lever pedestal, the surface of the test base is slidably installed with lifting platform, the top of test base is rotatably installed with lever pedestal, the bottom surface of one side of lever pedestal is rotatably connected with tension meter, and the bottom end of tension meter is movably connected with the top surface of lifting platform, one side of test base is movably installed with drive rod, the output end of drive rod is rotatably connected with the bottom surface of the other side of lever pedestal, the number of adaptive holder is two and is respectively fixedly installed on the surface of test base and lifting platform.

[0007] The device realizes the amplification of the applied pulling force through the lever effect by the connection between the lever pedestal and the tension meter, thereby enhancing the testing capacity of the driving rod at the pulling force output end.

[0008] In a preferred example, the utility model discloses further can be configured as: one side of test base is equipped with hydraulic pump station, the output of hydraulic pump station is connected with driving rod for providing hydraulic power for driving rod.

[0009] In a preferred example, the utility model discloses further can be configured as: test base and the surface of lifting platform adaptive holder are arranged oppositely and are located on the same vertical line.

[0010] In a preferred example, the utility model discloses further can be configured as: the adaptive holder includes fixed rod head, fixed holder and two oppositely arranged chuck, one end of fixed rod head is fixedly connected with the surface of fixed holder, the surface of fixed holder is fixedly installed with guide plate, the surface of chuck is equipped with sliding pin slidingly connected on the surface of guide plate, and the sliding direction of both sides sliding pin is V-shaped in two guide plates. The structure design can adaptively adjust the clamping force between chuck and guide plate through the friction effect, and the clamping force will increase accordingly with the increase of pulling force, thereby effectively avoiding the sliding or falling of power cord head, and ensuring the coordination of clamping force and pulling force in the testing process.

[0011] In a preferred example, the utility model discloses further can be configured as: the inner side of fixed rod head is slidingly connected with damping pull head, and the other end of damping pull head is movably connected with the surface of chuck. The structure design utilizes the damping effect of damping pull head to ensure that chuck can stably adjust the clamping state when clamping the power cord. Meanwhile, chuck adaptively slides along the surface of guide plate during clamping, increases the clamping degree, and makes the clamping process more accurate and reliable.

[0012] In a preferred example, the utility model discloses further can be configured as: the output of tension meter is electrically connected with unit, the output of unit is connected with the control end of driving rod, and the surface of driving rod is equipped with displacement sensor for detecting the telescopic amount of driving rod.

[0013] The displacement sensor is used for monitoring the telescopic amount of driving rod, a feedback system is formed, the pulling force and displacement in the stretching test process can be accurately controlled, high-precision power cord tensile test is realized, and the stretching deformation effect of power cord is determined according to the telescopic amount of driving rod.

[0014] The utility model discloses in a preferable example can be further configured as: driving rod and tensile meter are located lever pedestal's both ends respectively, and tensile meter is relatively closer to the connecting point of test baseplate and lever pedestal. The structure is through the position of driving rod and tensile meter, utilizes lever effect to promote tensile force, makes driving rod be able to with smaller deformation variable accurate detection power cord's stretch amount. Through this design, can more accurately measure the stretch condition of power cord when high load test, simultaneously avoid the measurement error produced because of applying large moment.

[0015] The utility model discloses the obtained beneficial effect is:

[0016] 1. In the utility model, adopt the combination of lever pedestal and tensile meter, and the lever pedestal enlargies the force through the force arm, thereby making the tensile force of driving rod end increase, and through the proportional relationship of lever, can monitor the slight tensile deformation of power cord through the telescopic amount of driving rod under smaller deformation effect, and this design ensures that even under the condition of larger load, the tensile test can also keep high accuracy, avoids the measurement error that can appear when directly applying large moment.

[0017] 2. In the utility model, adopt the V-shaped sliding of chuck to realize the friction effect, and along with the increase of cable tensile force, the chuck adaptively increases the clamping force, thereby effectively avoids the power cord sliding or falling off. This design makes the clamping process more stable and reliable, ensures the coordination of clamping force and tensile force in the testing process, improves the clamping effect, and enhances the accuracy of testing. DRAWINGS

[0018] Figure 1 It is the overall structure schematic diagram of an embodiment of the utility model;

[0019] Figure 2 It is the side view schematic diagram of an embodiment of the utility model;

[0020] Figure 3 It is the adaptive chuck exploded structure schematic diagram of an embodiment of the utility model;

[0021] Figure 4 It is the lever pedestal structure schematic diagram of an embodiment of the utility model;

[0022] Figure 5 It is the tensile meter structure schematic diagram of an embodiment of the utility model.

[0023] Reference signs:

[0024] 100, test baseplate;110, lifting platform;120, hydraulic pump station;

[0025] 200, adaptive holder; 210, fixed head; 220, fixed seat; 230, chuck; 211, damping pull head; 221, guide plate; 231, sliding pin;

[0026] 300, lever pedestal; 310, tension meter; 320, driving rod. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the utility model more clear and apparent, the utility model is further described in detail below in combination with specific embodiments and with reference to the drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0028] It is understood that the above description is only exemplary and is not intended to limit the scope of the utility model.

[0029] The utility model is described below in combination with the accompanying drawings. Figures 1-5 Some embodiments of the utility model provide a power cord tensile test device. Embodiment one

[0030] The utility model provides a power cord tensile test device, and the specific configuration is as follows:

[0031] The test base 100 is provided with a lifting platform 110 on the surface. The lifting platform 110 can be adjusted in height at any time to adapt to the test requirements of different power cords. One side of the test base 100 is provided with a hydraulic pump station 120 for providing hydraulic power for the driving rod 320, and the hydraulic system can realize more accurate control.

[0032] The lever pedestal 300 is rotatably installed at the top end of the test base 100. Through the lever action on the lever pedestal 300, the applied tension can be effectively amplified, and the accurate control of tension during the test process is ensured.

[0033] The tension meter 310 is installed on the bottom surface of one side of the lever pedestal 300 and can display the tension value of the power cord in real time. The output end of the tension meter 310 is electrically connected with a control unit, which is connected with the control end of the driving rod 320, and is used for adjusting the extension amount of the driving rod 320.

[0034] The driving rod 320 is installed on the side surface of the test base 100 and is rotatably connected with the bottom surface of the other side of the lever pedestal 300. During the test process, the tension applied to the power cord can be accurately controlled through the extension of the driving rod 320.

[0035] Supplemental description of the embodiment: During the test process, specifically, during the clamping of the power cord head using the clamp 230, the clamp 230 is pushed up to slide along the surface of the guide plate 221 and expand the gap, and the state of the clamp 230 is maintained by the damping of the damping puller 211, and after the power cord head is placed, the clamp 230 is pushed down to clamp the surface of the power cord head, and further by the friction between the power cord head and the clamp 230, the clamp 230 is pulled to slide along the surface of the guide plate 221, and in the tensile test, the clamping effect is further increased with the increase of the cable tension.

[0036] The working principle of the embodiment is that the hydraulic pump station 120 provides power for the driving rod 320 to drive the extension of the driving rod 320, thereby applying a continuously increasing tension. The lever pedestal 300 amplifies the applied force, making the tension and elongation during the test more accurate. The tension data displayed by the tension gauge 310 in real time can be monitored together with the data fed back by the displacement sensor to monitor the tensile resistance of the power cord. Embodiment two

[0037] The configuration of the embodiment is similar to that of embodiment 1, but differs in details, as follows:

[0038] The test base 100 has a lifting platform 110 slidingly installed on its surface. The lifting platform 110 can automatically adjust the height through an electric drive device to adapt to the test requirements of power cords of different sizes.

[0039] The lever pedestal 300 is rotatably installed at the top end of the test base 100. The tension gauge 310 is rotatably connected to the bottom surface of one side of the lever pedestal 300, and the tension gauge 310 is movably connected to the top surface of the lifting platform 110.

[0040] The hydraulic pump station 120 can provide power for the driving rod 320 and accurately adjust the tension applied to the power cord. The hydraulic system controls precisely to make the change of tension more stable and not prone to sharp fluctuations, thereby ensuring the test accuracy.

[0041] The adaptive clamp 200 is composed of a fixed rod head 210, a fixed clamp pedestal 220, a clamp 230, and a sliding pin 231. The clamp 230 is slidingly matched with the surface of the guide plate 221 through the sliding pin 231, and the clamping force is self-adaptively increased with the increase of the tension, thereby ensuring the stability of the power cord during the test process.

[0042] Supplementary explanation of the embodiment: in this embodiment, the clamping structure design of the adaptive clamp 200 is the same as that of embodiment 1, but on this basis, the sliding direction of the chuck 230 is designed to be V-shaped distribution, further enhancing the adaptive effect of the clamping force. Because the tension of the power cord changes more complexly, this clamp can automatically adjust the clamping force, ensuring that the clamp always maintains stable contact with the power cord regardless of the size of the tension.

[0043] During the test, the displacement sensor on the surface of the driving rod 320 monitors the extension and retraction amount of the driving rod 320, and the control unit adjusts the output of the hydraulic pump station 120 according to the sensor feedback data, so as to realize more accurate test control. Through real-time monitoring of the test data, the tensile strength of the power cord can be obtained, and corresponding data recording and analysis can be carried out according to the test requirements.

[0044] Summary of the embodiment:

[0045] Whether it is embodiment 1 or embodiment 2, the power cord tensile test device of the utility model can ensure the coordination of the tension and the clamping force in the test process through accurate hydraulic power control, lever effect and adaptive clamping structure, and provide a high-precision and high-stability tensile test solution. In practical application, the device can meet the high-standard requirements of power cord testing, especially in high-load or long-time use environment, it can maintain good performance stability and reliability.

[0046] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "a specific embodiment" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this 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 one or more embodiments or examples in a suitable manner.

[0047] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A power cord tensile strength testing device, characterized in that, include: The test base (100), the adapting clamp (200), and the lever lifting seat (300) are provided. A lifting platform (110) is slidably mounted on the surface of the test base (100). The lever lifting seat (300) is rotatably mounted on the top of the test base (100). A tension gauge (310) is rotatably connected to the bottom surface of one side of the lever lifting seat (300), and the bottom end of the tension gauge (310) is movably connected to the top surface of the lifting platform (110). A drive rod (320) is movably mounted on one side of the test base (100), and the output end of the drive rod (320) is rotatably connected to the bottom surface of the other side of the lever lifting seat (300). There are two adapting clamps (200), which are fixedly mounted on the surfaces of the test base (100) and the lifting platform (110), respectively.

2. The power cord tensile testing device according to claim 1, characterized in that, A hydraulic pump station (120) is provided on one side of the test base (100). The output end of the hydraulic pump station (120) is connected to the drive rod (320) to provide hydraulic power to the drive rod (320).

3. The power cord tensile testing device according to claim 1, characterized in that, The test base (100) and the lifting platform (110) are surface-adapted to the clamp (200) and arranged opposite to each other and on the same vertical line.

4. The power cord tensile testing device according to claim 1, characterized in that, The adaptive clamp (200) includes a fixed rod head (210), a fixed clamp seat (220), and two oppositely arranged clamps (230). One end of the fixed rod head (210) is fixedly connected to the surface of the fixed clamp seat (220). A guide plate (221) is fixedly installed on the surface of the fixed clamp seat (220). The surface of the clamp (230) is provided with a sliding pin (231) that slides onto the surface of the guide plate (221). The sliding pins (231) on both sides are V-shaped in the sliding direction of the two guide plates (221).

5. The power cord tensile testing device according to claim 4, characterized in that, The inner side of the fixed rod head (210) is slidably sleeved with a damping pull head (211), and the other end of the damping pull head (211) is movably connected to the surface of the clamp (230).

6. The power cord tensile testing device according to claim 1, characterized in that, The output end of the tension gauge (310) is electrically connected to a unit, the output end of which is connected to the control end of the drive rod (320), and the surface of the drive rod (320) is provided with a displacement sensor for detecting the extension and retraction of the drive rod (320).

7. The power cord tensile testing device according to claim 1, characterized in that, The drive rod (320) and the force gauge (310) are located at the two ends of the lever support (300), and the force gauge (310) is relatively closer to the connection point between the test base (100) and the lever support (300).

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