Fatigue testing machine with dynamic resistance detection cable

Abstract

The utility model belongs to the technical field of cable testing equipment, in particular to a fatigue testing machine with a dynamic resistance detection cable, which comprises a cabinet body and a cabinet door, a plurality of fixing pieces are arranged at the bottom of the cabinet body close to the cabinet door, a resistance testing device is arranged on one side of each fixing piece, a sliding rail is arranged at the top of the cabinet body, and a plurality of clamping grooves are formed in the sliding rail. The sliding rail is provided with a driving piece in a sliding mode, and the driving piece is rotationally connected with the swing piece through a rotating shaft. The swinging piece and the fixing piece are respectively connected with two ends of the cable; the resistance testing device comprises a plurality of resistance chucks, the resistance chucks are connected with the cable close to one side of the fixing piece to test the resistance value, and on the basis of a conventional tensile fatigue test, reciprocating torsion and friction movement between the cable and the ground are added. The swinging part and the fixing part are not collinear, the driving part does reciprocating motion, and the rotating shaft rotates, so that the cable is bent and twisted, the friction force is increased, and the actual scene of daily use of the charging cable is fully simulated.

Description

Technical Field

[0001] This utility model belongs to the technical field of cable testing equipment, specifically to a fatigue testing machine for cables with dynamic resistance detection. Background Technology

[0002] Currently, with the rapid development of the new energy vehicle industry, various new energy vehicles are appearing before people, bringing them a low-cost, efficient, and green travel experience. As a solution to the problem of charging and replenishing energy during the daily use of new energy vehicles, the convenience and reliability of charging and replenishing energy are important factors affecting the user experience of new energy vehicles. Charging cables are the connecting carriers between charging piles and new energy vehicles during the charging process. However, in actual use, it has been found that due to the irregular layout of charging piles and the size of new energy vehicles, as well as the habits of operators, charging cables are frequently subjected to stretching and irregular twisting during the charging process.

[0003] During cable use, cable twisting can occur due to wiring requirements, sometimes leading to abnormal core breakage and significant damage to the cable's performance. To ensure the stability of charging cables, a swing test is performed during product type testing. According to GB / T33594 standard, the traditional swing test machine "fixes one end of the sample to a bending fixture, applies an external force F to the other end, and the values ​​of the external force F and bending radius R are determined according to the standard requirements. A monitoring current of 0.1A is applied during the test." However, this testing method has hidden problems in practice. The cable may undergo multiple stretching and twisting cycles, but the internal conduit may not be completely broken, but rather have loose connections, causing unqualified cables to be misjudged. Moreover, this testing fixture moves regularly along a plane after being fixed, failing to simulate the application conditions in real-world scenarios. This results in cables that pass the initial test but exhibit abnormalities after being put into the market, affecting the efficiency and user experience of charging stations and ultimately leading to customer complaints. Utility Model Content

[0004] The purpose of this invention is to provide a fatigue testing machine with a dynamic resistance detection cable to solve the problems mentioned in the background art.

[0005] The technical solution of this utility model is as follows: A fatigue testing machine with a dynamic resistance detection cable includes a cabinet and a cabinet door. Multiple fixing components are provided at the bottom of the cabinet near the cabinet door. A resistance testing device is provided on one side of each fixing component. A slide rail is provided at the top of the cabinet, and a driving component is slidably mounted on the slide rail. The driving component is rotatably connected to a swinging component via a rotating shaft. The swinging component and the fixing components are respectively connected to both ends of the cable. The resistance testing device includes multiple resistance clamps, which are connected to the cable near the fixing component to measure the resistance value.

[0006] Preferably, the fixing member has a first groove, a pressure block is provided above the first groove, the pressure block has a second groove corresponding to the first groove, and the fixing member and the pressure block are fixedly connected by bolts.

[0007] Preferably, the cabinet is provided with side doors on both sides, which facilitates side access for adjusting and placing cables.

[0008] Preferably, the resistance testing device includes a resistance feedback module, which feeds back the abnormal cable resistance value to the control console.

[0009] Preferably, the console includes a display screen that can display cable operating parameters and resistance parameters, and controls the testing machine to stop operating when an abnormal resistance value is received.

[0010] Preferably, the cabinet door is provided with a partition on the side near the top of the cabinet, and the partition is provided with multiple cooling fans to prevent the internal temperature of the cabinet from becoming too high, which would increase the resistance of the cables.

[0011] Preferably, an emergency control mechanism is provided at the side cabinet door, and the emergency control mechanism is provided with multiple emergency stop buttons.

[0012] Preferably, the oscillating component includes two pressing components, which are connected to the oscillating component by bolts. By rotating the bolts, the distance between the two pressing components can be adjusted to place and fix cables of different outer diameters.

[0013] Preferably, the fixing component is provided with a dustproof plate on the side near the cabinet door to reduce dust from entering the resistance testing device.

[0014] Preferably, the cabinet is equipped with an audible and visual alarm, which is used to issue an alarm when the testing machine malfunctions.

[0015] Compared with the prior art, this utility model provides a fatigue testing machine with a dynamic resistance detection cable, which has at least one of the following beneficial effects:

[0016] 1. In addition to the conventional tensile fatigue test, reciprocating torsion and cable friction movement with the ground were added. By making the swinging part and the fixed part non-collinear and the driving part reciprocating, and by making the rotating shaft rotate, the cable not only bends and twists, but also increases the friction, which fully simulates the actual scenario of daily use of charging cables.

[0017] 2. During the tensile and torsion test, dynamic resistance detection was added to the resistance feedback module. The number of torsion and tension cycles the cable underwent in real time was displayed on the screen. If the internal resistance of the cable is too high, that is, exceeds the normal operating value, it will be used to monitor the quality and stability of the cable, making the detection of the cable's service life more accurate. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1 This is a schematic diagram of the internal cable of an embodiment of the present invention.

[0020] Figure 2 This is an internal schematic diagram of another embodiment of the present invention.

[0021] Figure 3 This is a perspective view of an embodiment of the present utility model.

[0022] Figure 4 This is a perspective view of an embodiment of the present invention from the rear.

[0023] Figure 5 This is a cross-sectional view of the internal cable in an embodiment of the present invention.

[0024] Figure Labels

[0025] 1-Cabinet body; 11-Slide rail; 12-Drive component; 13-Rotating shaft; 14-Swing component; 141-Crimping component; 15-Partition; 151-Cooling fan; 2-Cabinet door; 3-Fixing component; 31-First groove; 4-Resistance testing device; 41-Resistance clamp; 42-Resistance feedback module; 5-Pressure block; 51-Second groove; 6-Side cabinet door; 61-Emergency control mechanism; 611-Emergency stop button; 7-Control console; 71-Display screen; 8-Dustproof plate; 9-Audible and visual alarm; 10-Cable; Detailed Implementation

[0026] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0027] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0028] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a 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. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] like Figures 1 to 3 As shown, the device includes a cabinet body 1 and a cabinet door 2. Multiple fixing components 3 are located at the bottom of the cabinet body 1 near the cabinet door 2. A resistance testing device 4 is located on one side of each fixing component 3. A slide rail 11 is located at the top of the cabinet body 1. A driving component 12 is slidably mounted on the slide rail 11. The driving component 12 is rotatably connected to a swing component 14 via a rotating shaft 13. The swing component 14 and the fixing components 3 are respectively connected to both ends of a cable 10. The resistance testing device 4 includes multiple resistance clamps 41. The resistance clamps 41 are connected to the cable 10 near the fixing component 3 to measure the resistance value. In addition to the conventional tensile fatigue test, reciprocating torsion and frictional movement between the cable and the ground are added. By ensuring that the swing component 14 and the fixing component 3 are not collinear, and by having the driving component reciprocate, and by causing the rotating shaft to rotate, the cable 10 not only bends and twists but also experiences increased friction, fully simulating the actual scenario of daily use of charging cables.

[0032] like Figures 1 to 4As shown, the fixing member 3 has a first groove 31, and a pressure block 5 is provided above the first groove 31. The pressure block 5 has a second groove 51 corresponding to the first groove 31. The fixing member 3 and the pressure block 5 are fixedly connected by bolts. The cabinet 1 has side cabinet doors 6 on both sides for easy side access to adjust and place the cable 10. The resistance testing device 4 includes a resistance feedback module 42. When the resistance value of the cable 10 is abnormal, the resistance feedback module 42 feeds it back to the control console 7. The control console 7 includes a display screen 71, which can display the operating parameters and resistance parameters of the cable 10. When an abnormal resistance value is received, the testing machine is controlled to stop running. During the tensile and torsion test, dynamic resistance detection is added to the resistance feedback module 42 to detect in real time how many times the cable 10 has been torsion and stretched and feed it back to the display screen 71. If the internal resistance of the cable 10 is too high, that is, it exceeds the normal operating value, the quality stability of the cable 10 is monitored, and the service life of the cable is more accurately detected. Furthermore, the resistance testing device 4 detects whether the circuit controlling the two control wires is in operation. To check for broken cores, two wires are connected at one end. The change in resistivity between these two wires is measured to determine if a broken core is present. The resistance is displayed on the screen. A resistivity measuring wire is connected to a resistivity measuring device, and the value is fed back to the display screen 71. A partition 15 is provided on the side of the cabinet door 2 near the top of the cabinet body 1. The partition 15 is equipped with multiple cooling fans 151 to prevent the internal temperature of the cabinet body 1 from becoming too high, which would increase the resistance of the cable 10. An emergency control mechanism 61 is provided at the side cabinet door 6. The emergency control mechanism 61 is equipped with multiple emergency stop buttons 61. 1. The emergency stop button 611 controls the reciprocating movement of the drive component 12 and the rotation of the swing component 14 respectively; the swing component 14 includes two pressing parts 141, which are connected to the swing component 14 by bolts. The distance between the two pressing parts 141 can be adjusted by rotating the bolts to place and fix cables 10 of different outer diameters; the fixing part 3 is provided with a dustproof plate 8 on the side near the cabinet door 2 to reduce dust from entering the resistance testing device 4; the cabinet 1 is provided with an audible and visual alarm 9, which is used to sound an alarm when the testing machine malfunctions.

[0033] Furthermore, such as Figure 5 As shown, the fixing part 3 connects to end A of the cable, and the swinging part 14 connects to end B; end A simulates a charging pile, and end B simulates a vehicle body socket. The distance between the two ends A and B is about 3 meters. The cable rotates and reciprocates at point A and B to simulate the cable in actual use and to test the cable's fatigue resistance.

[0034] The testing steps are as follows:

[0035] a) Fix end A of the cable tail at point C, move end B to point D, rotate end B 180 degrees to the left via pivot 13, then move to point C, rotate end B 180 degrees to the left via pivot 13 again, then move to point D. Repeat the above operation to rotate end B to the left 5 times (i.e., rotate to the left 900 degrees). At this time, the gun end is at point D.

[0036] b) When end B moves to point C, it rotates 180 degrees to the right through pivot 13 and moves to point D. Then it rotates 180 degrees to the right through pivot 13 again. Repeat the above operation so that end B rotates 10 times to the right through pivot 13 (i.e., rotates 900 degrees to the right). At this time, end B is at point D.

[0037] c) Repeat the above reciprocating motion (one reciprocating motion is from point C to point D and back to point C).

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A fatigue testing machine with dynamic resistance detection cable, characterized in that: Including cabinet and cabinet door, the cabinet bottom is equipped with a plurality of fixed parts near the cabinet door, the fixed part is equipped with resistance testing device on one side, the cabinet top is equipped with slide rail, the slide rail is equipped with driving part, the driving part is rotatably connected to the swing part through the rotating shaft, the swing part and the fixed part are respectively connected to the cable ends, the resistance testing device includes a plurality of resistance collets, the resistance collet is connected to the cable resistance value near the fixed part side.

2. The fatigue testing machine with dynamic resistance detection cable of claim 1, wherein: The fixed part is equipped with a first groove, the first groove is equipped with a pressing block above, the pressing block is equipped with a second groove corresponding to the first groove, and the fixed part and the pressing block are fixedly connected through bolts.

3. The fatigue testing machine with dynamic resistance detection cable of claim 1, wherein: The cabinet is equipped with a side cabinet door on both sides, which is convenient for entering and adjusting the cable.

4. The fatigue testing machine with dynamic resistance detection cable of claim 1, wherein: The resistance testing device includes resistance feedback module, when the cable resistance value is abnormal, the resistance feedback module feeds back to the control console.

5. The fatigue testing machine with dynamic resistance detection cable of claim 4, wherein: The control console includes a display screen, which can display cable operating parameters and resistance parameters, and stop running when receiving abnormal resistance value.

6. The fatigue testing machine with dynamic resistance detection cable of claim 1, wherein: The cabinet door is equipped with a partition plate near the top side of the cabinet, and a plurality of cooling fans are arranged on the partition plate to prevent the temperature inside the cabinet from being too high to increase the cable resistance.

7. The fatigue testing machine with dynamic resistance detection cable of claim 3, wherein: The side cabinet door is equipped with an emergency control mechanism, and the emergency control mechanism is equipped with a plurality of emergency stop buttons.

8. The fatigue testing machine with dynamic resistance detection cable of claim 1, wherein: The swing part includes two pressure connecting parts, which are connected to the swing part through bolts, and the distance between the two pressure connecting parts can be adjusted by rotating the bolt to fix the cable with different outer diameters.

9. The fatigue testing machine with dynamic resistance detection cable of claim 1, wherein: The fixed part is equipped with a dustproof plate near the cabinet door side to reduce dust entering the resistance testing device.

10. The fatigue testing machine with dynamic resistance detection cable of claim 1, wherein: The cabinet is equipped with a sound and light alarm, which is used to alarm when the testing machine is abnormal.

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