Power line bending test device

Abstract

The utility model discloses a power line bending test device, and relates to the technical field of power line tests, the power line bending test device comprises a control cabinet body, one side of the control cabinet body is provided with a rotating disc, the outer side of the rotating disc is provided with a circular hole, and the inner side of the circular hole at the outer side of the rotating disc is provided with an insertion shaft in an outward penetrating manner; the front end of the insertion shaft is provided with a wire clamping plate, the two sides of the wire clamping plate are provided with arc grooves, the center of the inner side of each arc groove extends towards the outer side to be provided with a spring, one end of each spring is fixedly provided with a wire pasting sheet, and the bottom end of one side of the control cabinet body is provided with a side plate. Through the arrangement of the spring for reducing the extrusion force of the power line on the line sticking sheet, when the power line is bent, the line sticking sheet can enable the power line to be better attached to the outer side of the line clamping plate, and the design of the inclined surfaces at the upper end and the lower end of the line sticking sheet can reduce the abrasion of the power line caused by overlarge bending force.

Description

Technical Field

[0001] This utility model relates to the field of power cord testing technology, specifically a power cord bending test device. Background Technology

[0002] The power cord bending test is used to evaluate the durability and safety of power cords under bending conditions that may be encountered in daily use. It typically involves repeatedly bending the power cord to a certain angle to simulate actual bending conditions and test its bending resistance and performance. The specific steps include: first, fixing the power cord to be tested on the test fixture; then, adjusting the bending angle and speed according to the test requirements; then, starting the test equipment to conduct the bending test; recording the number of bends, the extent of damage to the power cord, and other data during the process; and finally, evaluating the bending resistance and performance of the power cord based on the test results. This test must comply with certain standards and specifications, such as UL-817 and other standards related to "General Safety Requirements for Flexible Cord Assemblies and Power Cords," which cover detailed requirements for test equipment, conditions, procedures, and evaluation criteria. The power cord bending test is crucial for ensuring the safety and durability of power cords in daily use. The test can identify potential problems in the design or manufacturing of the power cord, thereby improving product quality and safety. It is widely used in the production and quality control of power cords, DC cables, USB cables, and other products. According to search results, recent research or progress in power cord bending tests includes improvements and optimizations to power cord bending testing machines. Some new testing machines use servo motor drives and PLC controllers to achieve more precise angle control and counting functions, which makes power cord bending tests more scientific and accurate, and helps to improve the quality and safety of power cords.

[0003] According to publication number CN213714957U, this novel power cord bending test device features a first groove designed to accommodate a rotating disk, support frame, and tension detector. A second groove is designed to accommodate a first rotating shaft, data processor, and torque sensor. A motor provides rotational power to the rotating disk inside the device. The first rotating shaft transmits the torque generated by the motor to the rotating disk. Multiple evenly distributed bending post insertion holes facilitate the insertion and fixing of four bending posts, enabling adjustable bending points to accommodate bending requirements of power cords of varying thicknesses. The first power cord insertion hole, in conjunction with the installation of the second threaded fixing post, securely clamps the bent end of the power cord.

[0004] The above technology utilizes components such as a rotating disk, support frame, and tensile detector to control the bending point. When the power cord is bent, the outer sheath of the power cord has a certain toughness, and the protruding edges extending from the outer edge of the clamping structure on the equipment can easily scratch the sheath of the power cord.

[0005] Therefore, in view of this, we have studied and improved the existing shortcomings and proposed a power cord bending test device. Utility Model Content

[0006] The purpose of this invention is to provide a power cord bending test device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a power cord bending test device, comprising: a control cabinet body, a turntable provided on one side of the control cabinet body, a circular hole provided on the outer side of the turntable, an insert shaft extending outward from the inner side of the circular hole on the outer side of the turntable, a wire clamping plate provided at the front end of the insert shaft, arc grooves provided on both sides of the wire clamping plate, a spring extending outward from the center of the inner side of the arc groove, and a wire-adhesive piece fixedly provided at one end of the spring;

[0008] A side plate is provided at the bottom of one side of the control cabinet body. An electric telescopic rod body is provided on one side of the top of the side plate. A slide is fitted on the outer side of the other side of the top of the side plate. A rectangular channel is opened on the front of the slide. A horizontal push plate is horizontally arranged through the inner side of the rectangular channel on the front of the slide. A horizontal groove is opened at the top of the front end of the horizontal push plate. An auxiliary structure is vertically arranged on the inner side of the horizontal groove.

[0009] Furthermore, the upper and lower ends of the wire patch are inclined with arc surfaces, and the diameter of the wire patch is smaller than the diameter of the arc groove, so that the wire patch can shrink inward to the inside of the arc groove when squeezed by the power line.

[0010] Furthermore, the carriage and the side plate form a sliding structure, which facilitates the movement of the carriage.

[0011] Furthermore, the length of the transverse groove is less than the overall length of the transverse push plate, thus restricting the path of the slider's movement inside the transverse groove.

[0012] Furthermore, the auxiliary structure includes a slider, a vertical frame, a lifting block, a limiting rod, a lifting line, and a weight. A slider is provided on the inner side of the transverse groove. An L-shaped vertical frame is vertically provided on one side of the top of the slider. A circular hole is opened in the middle of the top of the vertical frame. A limiting rod is arranged in a ring on the inner side of the circular hole at the top of the vertical frame. A lifting block is vertically provided in the middle of the circular hole at the top of the vertical frame. A lifting line is provided extending outward from the inner side of the lifting block. A weight is provided at the bottom end of the lifting line. The lifting line is fixedly connected to the top of the lifting block and the weight to prevent the lifting line from falling off.

[0013] Furthermore, the limiting rod is plugged into the inner side of the circular hole at the top of the vertical frame, which facilitates the removal and installation of the limiting rod.

[0014] Furthermore, the slider and the horizontal groove form a sliding structure, which facilitates the slider to drive the vertical frame to move.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model uses an arc groove on both sides of the cable clamping plate to wind the power cord, and the cable patch protects the outer layer of the power cord. At the same time, the upper and lower ends of the cable patch are beveled, so the bending angle of the power cord is fixed. Meanwhile, the spring reduces the pressure of the power cord on the cable patch. In this way, when the power cord is bent, the cable patch can make the power cord fit better against the outside of the cable clamping plate. The beveled design of the upper and lower ends of the cable patch can reduce wear on the power cord due to excessive bending force.

[0017] 2. This utility model uses a slider inside the horizontal groove to move the vertical frame forward. At this time, the power cord passes through the hole at the top of the vertical frame and enters the gap of the lifting line. Since the limit rod and the vertical frame are connected by a plug-in method, the user can pull out the limit rod, and the lifting line will be suspended outside the power cord. This simplifies the connection steps and method between the weight and the power cord. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the first appearance structure of the present utility model;

[0019] Figure 2 This is a schematic diagram of the second appearance structure of the present utility model;

[0020] Figure 3 This is a schematic diagram of the external structure of the wire clamping plate of this utility model;

[0021] Figure 4 This is a schematic diagram of the first auxiliary structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the second auxiliary structure of this utility model.

[0023] In the diagram: 1. Control cabinet body; 2. Turntable; 3. Cable clamping plate; 4. Auxiliary structure; 41. Slider; 42. Vertical frame; 43. Lifting block; 44. Limit rod; 45. Lifting line; 46. Weight; 5. Horizontal groove; 6. Horizontal push plate; 7. Slide carriage; 8. Side plate; 9. Electric telescopic rod body; 10. Insert shaft; 11. Arc groove; 12. Wire attaching piece; 13. Spring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1-5 As shown, a power cord bending test device includes: a control cabinet body 1, a turntable 2 is provided on one side of the control cabinet body 1, a circular hole is provided on the outer side of the turntable 2, an insert shaft 10 is provided through the inner side of the circular hole on the outer side of the turntable 2, a wire clamping plate 3 is provided at the front end of the insert shaft 10, arc grooves 11 are provided on both sides of the wire clamping plate 3, a spring 13 is provided extending outward from the center of the inner side of the arc groove 11, and a wire attaching piece 12 is fixedly provided at one end of the spring 13;

[0026] A side plate 8 is provided at the bottom of one side of the control cabinet body 1. An electric telescopic rod body 9 is provided on one side of the top of the side plate 8. A slide 7 is fitted on the outer side of the other side of the top of the side plate 8. A rectangular channel is provided on the front of the slide 7. A horizontal push plate 6 is provided through the inner side of the rectangular channel on the front of the slide 7. A horizontal groove 5 is provided at the top of the front end of the horizontal push plate 6. An auxiliary structure 4 is provided vertically on the inner side of the horizontal groove 5.

[0027] Furthermore, since the upper and lower ends of the wire-attaching piece 12 have inclined surfaces, when the power cord is inserted into the sides of the wire-attaching plate 3, the structure of the wire-attaching piece 12 can reduce the wear on the outer surface of the power cord at the edge of the arc groove 11. At the same time, the spring 13 can reduce the pressure of the wire-attaching piece 12 and the power cord being wrapped together. The user can round or blunt the upper and lower edges of the arc groove 11 so that the upper and lower ends of the arc groove 11 achieve the same function as the inclined surfaces at the upper and lower ends of the wire-attaching piece 12. The user can design the radius of the arc groove 11 to be different from the radius of the wire-attaching piece 12 so that the wire-attaching piece 12 can withstand power cords of different diameters.

[0028] When the power cord is inserted into the arc grooves 11 on both sides of the clamping plate 3, the inclined surface structure can effectively reduce the wear of the outer sheath of the power cord by the edge of the arc groove 11. This helps to extend the service life of the power cord, prevent the internal wires from being exposed due to sheath wear, and ensure the integrity of the power cord during the bending test. Secondly, in terms of reducing winding pressure, one end of the spring 13 is connected to the wire-attaching piece 12, which can reduce the winding pressure between the wire-attaching piece 12 and the power cord, making the pressure on the power cord during the test more reasonable, avoiding damage to the internal structure due to excessive compression, and helping to maintain the stability of the power cord in the clamping plate 3. Finally, in terms of adapting to power cords of different diameters, the user can round or passivate the arc groove 11 so that its upper and lower ends have the same function as the inclined surface of the wire-attaching piece 12, and design the radius of the arc groove 11 to be different from the radius of the wire-attaching piece 12, so that the wire-attaching piece 12 can withstand power cords of different diameters. This effect greatly improves the versatility of the device, and bending tests can be performed on power cords of both thick and thin diameters. The unique structure of the wire-attaching piece 12 and the arc groove 11, with the inclined surface of the wire-attaching piece 12 and the arc groove 11 working together, reduces wear and can accommodate power cables of different diameters. The pressure adjustment mechanism 1312, through a spring 13, adjusts the winding pressure between the wire-attaching piece 12 and the power cable. This automatically adjusts the pressure according to the actual condition of the power cable, rather than using a fixed clamping method, thereby improving the device's protection of the power cable and the accuracy of the test.

[0029] like Figures 1-5 As shown, a power cord bending test device includes an auxiliary structure 4 comprising a slider 41, a vertical frame 42, a lifting block 43, a limiting rod 44, a lifting line 45, and a weight 46. The slider 41 is disposed inside the transverse groove 5. An L-shaped vertical frame 42 is vertically disposed on one side of the top of the slider 41. A circular hole is opened in the middle of the top of the vertical frame 42. A limiting rod 44 is annularly disposed inside the circular hole at the top of the vertical frame 42. A lifting block 43 is vertically disposed in the middle of the circular hole at the top of the vertical frame 42. A lifting line 45 extends outward from the inner side of the lifting block 43. A weight 46 is disposed at the bottom end of the lifting line 45. The lifting line 45 is fixedly connected to the top of the lifting block 43 and the weight 46.

[0030] As the slider 41 moves closer to the outside of the power cord from the inside of the transverse groove 5, one end of the power cord passes through the inner side of the circular hole at the top of the vertical frame 42 and extends into the gap of the lifting line 45. At the same time, the limit rod 44 and the inner side of the vertical frame 42 are designed to be plugged in. When the user pulls out the limit rod 44, the limit rod 44 and the lifting block 43 will fall downward due to the weight of the weight 46. Then the lifting line 45 will hang the weight 46 on the outside of the power cord. The user can remove the lifting block 43. Since the lifting block 43 serves to position the weight 46 on the outside of the power cord, it has little impact on the weight 46 and the lifting line 45 hanging on the outside of the power cord. Therefore, the installation of the lifting block 43 can be omitted. The user can also set the insertion angle of the limit rod 44 to an angle, which makes it easier to pull out the limit rod 44 and reduces the steps for the user to find the limit rod 44.

[0031] Working principle: When using this power cord bending test device, first start the control cabinet body 1. At this time, wrap the power cord to be measured around the inner side of the wire-attaching pieces 12 on both sides of the wire clamping plate 3. The spring 13 starts to reduce the impact force of the power cord on the wire-attaching pieces 12, and insert the insertion shaft 10 into the outer surface of the turntable 2. Start the electric telescopic rod body 9. The electric telescopic rod body 9 pushes the slide 7 to move at the upper end of the side plate 8. The user moves the slider 41 inside the horizontal groove 5. The slider 41 moves the vertical frame 42 closer to the outside of the power cord. The user inserts the other end of the power cord into the hole at the top of the vertical frame 42 and makes the power cord pass through the lifting line 45. Since the limit rod 44 and the vertical frame 42 are connected by a plug-in structure, the user pulls out the limit rod 44. The limit rod 44 and the lifting block 43 fall downward under the weight of the weight 46. The lifting line 45 helps the weight 46 to hang on the outside of the power cord, which plays a role in testing the bending of the power cord after bearing the weight. This is the working principle of the power cord bending test device.

[0032] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A power cord bending test apparatus, comprising: The control cabinet body (1) is characterized in that a turntable (2) is provided on one side of the control cabinet body (1), a circular hole is provided on the outer side of the turntable (2), a plug shaft (10) is provided through the inner side of the circular hole on the outer side of the turntable (2), a wire clamping plate (3) is provided at the front end of the plug shaft (10), an arc groove (11) is provided on both sides of the wire clamping plate (3), a spring (13) is provided extending outward from the center of the inner side of the arc groove (11), and a wire attaching piece (12) is fixedly provided at one end of the spring (13). A side plate (8) is provided at the bottom of one side of the control cabinet body (1). An electric telescopic rod body (9) is provided on one side of the top of the side plate (8). A slide (7) is sleeved on the outer side of the other side of the top of the side plate (8). A rectangular channel is provided on the front of the slide (7). A horizontal push plate (6) is provided through the inner side of the rectangular channel on the front of the slide (7). A horizontal groove (5) is provided at the top of the front end of the horizontal push plate (6). An auxiliary structure (4) is provided vertically on the inner side of the horizontal groove (5).

2. The power cord bending test device according to claim 1, characterized in that, The upper and lower ends of the adhesive strip (12) are inclined and have an arc surface, and the diameter of the adhesive strip (12) is smaller than the diameter of the arc groove (11).

3. The power cord bending test device according to claim 1, characterized in that, The slide (7) and the side plate (8) form a sliding structure.

4. The power cord bending test device according to claim 1, characterized in that, The length of the transverse groove (5) is less than the overall length of the transverse push plate (6).

5. The power cord bending test device according to claim 1, characterized in that, The auxiliary structure (4) includes a slider (41), a vertical frame (42), a lifting block (43), a limiting rod (44), a lifting line (45), and a weight (46). The slider (41) is provided on the inner side of the transverse groove (5). An L-shaped vertical frame (42) is vertically provided on one side of the top of the slider (41). A circular hole is provided in the middle of the top of the vertical frame (42). A limiting rod (44) is provided in a ring on the inner side of the circular hole at the top of the vertical frame (42). A lifting block (43) is vertically provided in the middle of the circular hole at the top of the vertical frame (42). A lifting line (45) is provided extending outward from the inner side of the lifting block (43). A weight (46) is provided at the bottom of the lifting line (45). The lifting line (45) is fixedly connected to the top of the lifting block (43) and the weight (46).

6. The power cord bending test device according to claim 5, characterized in that, The limiting rod (44) is plugged into the inner side of the circular hole at the top of the vertical frame (42).

7. A power cord bending test device according to claim 5, characterized in that, The slider (41) and the transverse groove (5) form a sliding structure.

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