A wire extremely low temperature impact test device

Abstract

The utility model relates to test machine equipment technical field, a kind of electric wire extremely low temperature impact test device, including refrigeration box body, the cavity inner wall of refrigeration box body is fixedly installed with impact subassembly, and impact subassembly includes installation platform, and installation platform is detachably installed in the inner wall of refrigeration box body, servo motor group is fixedly installed in the inside top of stereoscopic support column, force application subassembly is fixedly installed in the driving end of servo motor group, sector disc is fixedly installed in the side of force application subassembly, the upper surface middle part of installation platform is fixedly installed with the limiting component for limiting electric wire, and limiting component is located below sector disc, and limiting component includes locating seat and clamping group, and the middle part bolt of clamping plate is installed in the inside of U-shaped clamping block.The utility model can accurately control internal temperature by refrigeration box body, provides stable extremely low temperature environment for electric wire, ensures the accuracy and reliability of test result, and servo motor group replaces artificial, and the size, direction and frequency of impact force are accurately controlled.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a device for testing electrical wires at extremely low temperatures. Background Technology

[0002] The low-temperature impact test device for cables is a specialized device used to test the impact resistance of cables in low-temperature environments. It is used to evaluate the cold resistance and impact resistance of cables in low-temperature environments. When conducting a low-temperature impact test on cables, the cable sample and the impact device are usually placed in a low-temperature chamber and cooled according to the specified temperature and time. Then, the impact device is used to conduct an impact test on the cable sample, and changes in its appearance, insulation performance, etc. are observed and recorded. Finally, the impact resistance of the cable sample is evaluated according to the evaluation criteria.

[0003] The existing low-temperature impact testing device with authorization publication number CN219799078U uses an impactor that falls with gravity to impact the sample in the placement tank. This achieves rapid sealing of the test plate, sleeve plate, and cylinder without affecting the rapid impact test, thus avoiding problems such as sample surface liquefaction caused by air circulation and the influence of airflow changes on resistance in the cylinder. The chuck and baffle can only be fully opened when the sliding plate slides to abut against the limiting plate. However, the positioning accuracy of this process depends entirely on the operator's manual operation. If the operator pulls the sliding plate incompletely or pulls it excessively, the chuck may not fully open the through hole or the baffle may not fully open the vertical impact space of the cylinder, thus affecting the normal progress of the impact test. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing the following technical solution: A cryogenic impact testing device for electrical wires includes a cooling chamber body. An impact assembly is fixedly installed on the inner wall of the cooling chamber body. The impact assembly includes a mounting platform, a three-dimensional support column, a servo motor assembly, a force-applying component, and a fan-shaped disc. The mounting platform is detachably installed on the inner wall of the cooling chamber body. The three-dimensional support column is bolted to one side of the mounting platform. The servo motor assembly is fixedly installed inside the top of the three-dimensional support column. The force-applying component is fixedly installed on the drive end of the servo motor assembly. The fan-shaped disc is fixedly installed on one side of the force-applying component. The upper surface of the mounting platform is fixedly mounted with... A limiting assembly for restricting the wires is provided. The limiting assembly is located below the fan-shaped disc. The limiting assembly includes a positioning seat and a clamping assembly. The upper surface of the positioning seat has a groove. The clamping assembly includes a protruding plate, a U-shaped clamping block, and a locking plate. The protruding plate is snapped and fixedly installed inside the groove. The bottom end of the U-shaped clamping block is welded to the upper surface of the protruding plate. The middle part of the locking plate is bolted inside the U-shaped clamping block. The middle part of the locking plate has a circular locking groove. A control box is fixedly installed on the top of the refrigeration box body. The control box is connected to the refrigeration box body and the servo motor assembly wires.

[0005] As an improvement to the above technical solution, the force-applying component includes a mounting cover, an extension frame, and a handheld base. The middle part of the mounting cover is fixedly installed on the drive end of the servo motor assembly. One end of the extension frame is welded to the mounting cover, and the handheld base is fixedly installed on the other end of the mounting cover.

[0006] As an improvement to the above technical solution, a hammer block is welded to one side of the bottom end of the fan-shaped disc.

[0007] As an improvement to the above technical solution, threaded columns are movably installed at the four corners of the mounting platform, the threaded columns are fixedly installed to the inner wall of the refrigeration box body, and fixing bolts are fixedly installed between the bottom wall of the three-dimensional support column and the mounting platform.

[0008] As an improvement to the above technical solution, a baffle is fixedly installed on one side of the upper surface of the positioning seat, and the baffle is tightly installed on one side of the clamping assembly.

[0009] The beneficial effects of this utility model are: 1. This utility model can precisely control the internal temperature of the refrigeration chamber, providing a stable ultra-low temperature environment for the wires and ensuring the accuracy and reliability of the test results. The servo motor group can replace manual labor, precisely controlling the magnitude, direction, and frequency of the impact force to simulate various actual impact conditions, making the test closer to the actual application scenario. The clamping group in the limit component is reasonably designed, and the circular slot on the card plate can adapt to wires of different specifications. The wires can be easily replaced and fixed by adjusting the bolts, which improves the versatility and adaptability of the device and can meet the testing needs of various wire products. The control box realizes the automated control of the refrigeration chamber and the servo motor group. Operators can easily set test parameters through the control box, reducing the error and labor intensity of manual operation and improving the stability and repeatability of the test. Attached Figure Description

[0010] Figure 1 This is a structural diagram of the refrigeration box body of this utility model; Figure 2 This is a structural diagram of the impact component of this utility model; Figure 3 This is a structural diagram of the impact component of this utility model; Figure 4 This is a structural diagram of the force-applying component of this utility model; Figure 5 This is a structural unfolded view of the limiting component of this utility model.

[0011] Reference numerals: 1. Refrigeration box body; 2. Impact assembly; 21. Mounting platform; 211. Threaded column; 22. Three-dimensional support column; 221. Fixing bolt; 23. Servo motor assembly; 24. Force application assembly; 241. Mounting cover; 242. Extension frame; 243. Handheld base; 25. Fan-shaped disc; 251. Hammering block; 3. Limiting assembly; 31. Positioning seat; 311. Groove strip; 312. Baffle; 32. Clamping assembly; 321. Protrusion plate; 322. U-shaped clamping block; 323. Card plate; 324. Circular slot; 4. Control box. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of this utility model clearer, the following provides a more detailed description of the utility model. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the utility model.

[0013] Please see Figure 1-5 This utility model provides a technical solution: A cryogenic impact testing device for electrical wires includes a cooling chamber body 1. An impact assembly 2 is fixedly installed on the inner wall of the cooling chamber body 1. The impact assembly 2 includes a mounting platform 21, a three-dimensional support column 22, a servo motor assembly 23, a force application component 24, and a fan-shaped disc 25. The mounting platform 21 is detachably installed on the inner wall of the cooling chamber body 1. The three-dimensional support column 22 is bolted to one side of the surface of the mounting platform 21. The servo motor assembly 23 is fixedly installed inside the top of the three-dimensional support column 22. The force application component 24 is fixedly installed on the drive end of the servo motor assembly 23. The fan-shaped disc 25 is fixedly installed on one side of the force application component 24. A device for limiting the electrical wire is fixedly installed in the middle of the upper surface of the mounting platform 21. The limiting component 3 is located below the fan-shaped disc 25. The limiting component 3 includes a positioning seat 31 and a clamping assembly 32. The upper surface of the positioning seat 31 is provided with a groove strip 311. The clamping assembly 32 includes a protrusion plate 321, a U-shaped clamping block 322 and a clamping plate 323. The protrusion plate 321 is snapped and fixedly installed inside the groove strip 311. The bottom end of the U-shaped clamping block 322 is welded to the upper surface of the protrusion plate 321. The middle part of the clamping plate 323 is bolted inside the U-shaped clamping block 322. A circular slot 324 is provided in the middle of the clamping plate 323. A control box 4 is fixedly installed on the top of the refrigeration box body 1. The control box 4 is wired to the refrigeration box body 1 and the servo motor assembly 23.

[0014] In this embodiment, the cooling chamber body 1 serves as the container for the entire test apparatus, providing a stable low-temperature environment for the ultra-low temperature impact test of the wire. Its cavity houses the impact component 2 and the limiting component 3, enabling precise control of the internal temperature to simulate the ultra-low temperature scenarios that wires may encounter in actual use, ensuring the test is conducted under the required low-temperature conditions. The mounting platform 21 of the impact component 2 is detachably installed on the inner wall of the cooling chamber body 1, providing a stable mounting base for the three-dimensional support column 22. The detachable design facilitates the installation, disassembly, and maintenance of the impact component 2, allowing for easy replacement or adjustment of components as needed. The three-dimensional support column 22 is bolted to one side of the mounting platform 21, supporting the servo motor assembly 23 and fixing it to a suitable position. The height provides space for the subsequent installation of the force-applying component 24 and the fan-shaped disc 25, ensuring the stability and rationality of the entire impact component 2 structure. The servo motor group 23 is fixedly installed inside the top of the three-dimensional support column 22, serving as a power source to provide precise power output to the force-applying component 24. By controlling parameters such as the rotation speed and angle of the servo motor group 23, the movement of the force-applying component 24 can be precisely controlled, thereby achieving precise control of the impact force on the wire. The force-applying component 24 is fixedly installed at the drive end of the servo motor group 23, converting the rotational motion of the servo motor group 23 into a force-applying action on the fan-shaped disc 25, enabling the fan-shaped disc 25 to impact the wire in a predetermined manner, playing the role of transmitting and converting power. The fan-shaped disc 25 is fixedly installed... On one side of the force-applying component 24 is a component that directly applies impact force to the wire. Its fan-shaped design can change the mode and range of impact force application, simulating different impact conditions, such as impacts at different angles and with different forces, to more comprehensively evaluate the impact resistance performance of the wire. The upper surface of the positioning seat 31 of the limiting component 3 has a groove strip 311, which provides an installation position for the protrusion plate 321, playing a role in positioning and fixing, ensuring that the clamping assembly 32 can be accurately installed in the specified position, thereby ensuring the stability of the wire's position during the test. The protrusion plate 321 of the clamping assembly 32 is snapped and fixedly installed inside the groove strip 311, connecting the U-shaped clamping block 322 to the positioning seat 31, realizing the initial positioning and fixing of the clamping assembly 32. The bottom end of the U-shaped clamping block 322 is welded On the upper surface of the protrusion plate 321, the clamping plate 323 is provided with mounting support. Its U-shaped structure can better fit the wire and play an auxiliary clamping role. The bolt in the middle of the clamping plate 323 is installed inside the U-shaped clamping block 322. The circular slot 324 opened in the middle of the clamping plate 323 is used to fix the wire. The position and tightness of the clamping plate 323 can be easily adjusted by bolt installation to adapt to wires of different specifications and ensure that the wires will not be displaced during the test. The control box 4 is fixedly installed on the top of the refrigeration chamber body 1 and is wired to the refrigeration chamber body 1 and the servo motor group 23. It is the control center of the entire test device. Through the control box 4, the temperature of the refrigeration chamber, the operating parameters of the servo motor group 23, etc. can be set to realize the automated control and monitoring of the test process.

[0015] Operating Procedure: Check that all components, including the cooling chamber body 1, impact assembly 2, limit assembly 3, and control box 4, are intact and undamaged. Ensure that the wires are connected correctly. According to the test requirements, select the appropriate wire specifications and pass it through the circular slot 324 of the clamping plate 323 in the limit assembly 3. Adjust the position of the clamping plate 323 and fix it with bolts to ensure the wire position is stable. Open the control box 4 and set the temperature of the cooling chamber through the operation interface to reach the required extremely low temperature value for the test. Set the operating parameters of the servo motor group 23, including rotation speed, angle, and number of impacts, to simulate the required impact conditions. After confirming that the parameter settings are correct, start the cooling chamber to begin cooling down until the set extremely low temperature value is reached. When the cooling chamber temperature stabilizes, start the servo motor group 23. The force application component 24 drives the fan-shaped disc 25 to impact the wire. During the test, observe the appearance changes of the wire, such as whether there is any damage or deformation.

[0016] Beneficial effects: The cooling chamber body 1 can precisely control the internal temperature, providing a stable ultra-low temperature environment for the wires, ensuring the accuracy and reliability of the test results. The servo motor group 23 can replace manual labor, precisely controlling the magnitude, direction, and frequency of the impact force, simulating various actual impact conditions, making the test closer to the actual application scenario. The clamping group 32 in the limit component 3 is reasonably designed, and the circular slot 324 on the clamping plate 323 can adapt to wires of different specifications. The wires can be easily replaced and fixed by adjusting the bolts, improving the versatility and adaptability of the device, and meeting the testing needs of various wire products. The detachable design of the mounting platform 21 and the reasonable connection method between the components make the installation, disassembly, and maintenance of the device more convenient. If a component fails during the test, it can be quickly replaced and repaired, reducing downtime and improving test efficiency. The control box 4 realizes the automated control of the cooling chamber and the servo motor group 23. Operators can easily set test parameters through the control box 4, reducing the error and labor intensity of manual operation, and improving the stability and repeatability of the test.

[0017] Specifically, the force application component 24 includes a mounting cover 241, an extension bracket 242, and a handheld base 243. The middle part of the mounting cover 241 is fixedly installed on the drive end of the servo motor assembly 23. One end of the extension bracket 242 is welded to the mounting cover 241, and the handheld base 243 is fixedly installed on the other end of the mounting cover 241.

[0018] In this embodiment, the mounting cover 241 of the force application component 24 is fixedly installed in the middle of the drive end of the servo motor assembly 23. This design makes it the direct receiving component of the power output of the servo motor assembly 23. The rotational power generated when the servo motor assembly 23 is running will be accurately transmitted to the mounting cover 241, providing a basic power source for subsequent force application actions. One end of the extension frame 242 is welded to the mounting cover 241. This connection method ensures the firmness and stability between the extension frame 242 and the mounting cover 241, allowing the fan-shaped disc 25 to reach a farther position to impact the wire. The handheld base 243 is fixedly installed at the other end of the mounting cover 241, providing an interface for manual operation for the operator. In some special cases, such as when it is necessary to fine-tune the force application component 24, temporarily change the impact mode, or perform manual control during the equipment debugging stage, the operator can apply additional force or adjust the position of the force application component 24 by holding the handheld base 243.

[0019] Specifically, a hammer block 251 is welded to one side of the bottom end of the fan-shaped disc 25.

[0020] In this embodiment, the hammer block 251 is welded to one side of the bottom end of the fan-shaped disc 25, so that when the servo motor group 23 drives the fan-shaped disc 25 to rotate, the hammer block 251 can concentrate the kinetic energy generated by the rotation to a point or a small area.

[0021] Specifically, threaded posts 211 are movably installed at the four corners of the mounting platform 21. The threaded posts 211 are fixedly installed to the inner wall of the refrigeration box body 1. Fixing bolts 221 are fixedly installed between the bottom wall of the three-dimensional support column 22 and the mounting platform 21.

[0022] In this embodiment, threaded posts 211 are movably installed at the four corners of the mounting platform 21 and fixed to the inner wall of the refrigeration chamber body 1, so that the mounting platform 21 can be accurately positioned inside the refrigeration chamber. Through the fixing of the threaded posts 211, the mounting platform 21 and the refrigeration chamber body 1 form a stable and reliable connection, ensuring that the mounting platform 21 will not shake or shift during the test, providing a stable operating platform for the entire test device. By rotating the threaded posts 211 at the four corners, the height of the four corners of the mounting platform 21 can be finely adjusted to make it level, ensuring that the three-dimensional support column 22 placed on the mounting platform 21 and all components of the entire test device are in the correct position and angle, thereby improving the accuracy and reliability of the test. The bottom wall of the three-dimensional support column 22 is fixed to the mounting platform 21 by fixing bolts 221. The fixing bolts 221 provide strong connection force to ensure that the three-dimensional support column 22 can be firmly installed on the mounting platform 21.

[0023] Specifically, a baffle 312 is fixedly installed on one side of the upper surface of the positioning seat 31, and the baffle 312 is tightly installed on one side of the clamping assembly 32.

[0024] In this embodiment, the baffle 312 is fixed to one side of the upper surface of the positioning seat 31, providing a clear lateral position reference for the wire. When the wire is placed in the clamping assembly 32 for testing, the baffle 312 can serve as a positioning reference for one end of the wire, ensuring that the wire is accurately positioned in the predetermined lateral position. When conducting the impact resistance test of the wire, it is necessary to ensure that the wire is in the correct position at the moment of impact by the fan-shaped disc 25, so as to accurately measure the impact on the wire. The presence of the baffle 312 can prevent the wire from shifting laterally during placement, ensuring the consistency and repeatability of the test. The baffle 312, which is close to one side of the clamping assembly 32, can form a relatively closed space, which plays a certain longitudinal constraint role on the wire. This constraint can prevent the wire from sliding or jumping longitudinally when subjected to impact force, further improving the stability of the wire during the test. In extremely low temperature environments, the material of the wire may become more brittle and prone to deformation or movement. The auxiliary fixing role of the baffle 312 can effectively reduce the occurrence of this situation.

[0025] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A low-temperature impact testing device for electrical wires, comprising a cooling chamber body (1), characterized in that: An impact assembly (2) is fixedly installed on the inner wall of the cavity of the refrigeration box body (1). The impact assembly (2) includes a mounting platform (21), a three-dimensional support column (22), a servo motor assembly (23), a force application assembly (24), and a fan-shaped disc (25). The mounting platform (21) is detachably installed on the inner wall of the refrigeration box body (1). The three-dimensional support column (22) is bolted to one side of the surface of the mounting platform (21). The servo motor assembly (23) is fixedly installed inside the top of the three-dimensional support column (22). The force application assembly (24) is fixedly installed at the drive end of the servo motor assembly (23). The fan-shaped disc (25) is fixedly installed on one side of the force application assembly (24). A limiting assembly (3) for limiting the wire is fixedly installed in the middle of the upper surface of the mounting platform (21). The limiting assembly (3) is located on the fan-shaped disc. Below the disc (25), the limiting component (3) includes a positioning seat (31) and a clamping assembly (32). The upper surface of the positioning seat (31) is provided with a groove strip (311). The clamping assembly (32) includes a protrusion plate (321), a U-shaped clamping block (322), and a clamping plate (323). The protrusion plate (321) is snapped and fixedly installed inside the groove strip (311). The bottom end of the U-shaped clamping block (322) is welded to the upper surface of the protrusion plate (321). The middle bolt of the clamping plate (323) is installed inside the U-shaped clamping block (322). A circular slot (324) is provided in the middle of the clamping plate (323). A control box (4) is fixedly installed on the top of the refrigeration box body (1). The control box (4) is wired to the refrigeration box body (1) and the servo motor assembly (23).

2. The electrical wire cryogenic impact testing device according to claim 1, characterized in that: The force application component (24) includes a mounting cover (241), an extension frame (242), and a handheld base (243). The middle part of the mounting cover (241) is fixedly installed on the drive end of the servo motor assembly (23). One end of the extension frame (242) is welded to the mounting cover (241), and the handheld base (243) is fixedly installed on the other end of the mounting cover (241).

3. The electrical wire cryogenic impact testing device according to claim 1, characterized in that: A hammer block (251) is welded to one side of the bottom end of the fan-shaped disc (25).

4. The electrical wire cryogenic impact testing device according to claim 1, characterized in that: Threaded columns (211) are movably installed at the four corners of the mounting platform (21). The threaded columns (211) are fixedly installed to the inner wall of the refrigeration box body (1). Fixing bolts (221) are fixedly installed between the bottom wall of the three-dimensional support column (22) and the mounting platform (21).

5. The electrical wire cryogenic impact testing device according to claim 1, characterized in that: A baffle (312) is fixedly installed on one side of the upper surface of the positioning seat (31), and the baffle (312) is tightly installed on one side of the clamping assembly (32).

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