Cable shock resistance testing structure

Abstract

The utility model discloses a cable shock resistance testing structure, which belongs to the technical field of cable detection, and comprises a testing pedestal, the top of the testing pedestal is movably connected with a tightness adjusting mechanism, and the outer side of the tightness adjusting mechanism is movably connected with a buffer clamping mechanism. A servo motor can drive a linkage toothed plate to drive a clamping plate to clamp a cable in a self-adaptive mode, step buffering clamping is carried out in a nested telescopic block, the potential problem of rigid fixing can be effectively solved, cables of different diameters can be automatically adapted through reverse movement of the linkage toothed plate and contraction deformation of the telescopic block, and the cable fixing device is convenient to use and high in practicability. The stepped elastic buffer structure absorbs stress step by step during clamping, local overload caused by instant rigid clamping is avoided, the clamping force is stabilized within a safety threshold value in cooperation with precise torque control of the servo motor, the test fixing strength is guaranteed, and detection data misjudgment caused by mechanical damage is avoided.

Description

Technical Field

[0001] This utility model relates to the field of cable testing technology, and in particular to a test structure for the impact resistance performance of cables. Background Technology

[0002] Cable impact resistance testing technology aims to evaluate the reliability and durability of cables under dynamic loads such as mechanical impact and vibration. It is widely used in aerospace, rail transportation, new energy and other fields. Traditional testing methods rely on static tensile or drop hammer impact tests, which are difficult to simulate the multi-dimensional stress response under complex working conditions. With the development of intelligent sensing technology, real-time monitoring systems based on sensors such as fiber optic gratings and strain gauges have been introduced. These systems can accurately capture the dynamic strain, temperature and deformation distribution of cables during impact. Combined with digital image correlation technology and finite element simulation, it is possible to realize the visualization analysis of impact damage and the study of failure mechanisms. In addition, machine learning algorithms can predict the life cycle of cables in extreme environments by building an impact response database, providing data support for optimizing cable structure design and safe operation and maintenance. The breakthrough of this technology is of great significance to ensuring the stability of cable systems in high-end equipment.

[0003] In the existing technology, the cable inspection method involves workers repeatedly raising the impact block to a specified height, and then the impact block falls naturally multiple times to perform impact testing on the cable. However, the accuracy of the inspection is poor when using this method.

[0004] To address the aforementioned issues, an existing patent (publication number: CN221445716U) proposes a cable impact resistance testing structure. This structure involves a lifting component fixedly installed on the rear side of an impact resistance testing component. The impact resistance testing component includes a square support base, on the upper surface of which a wire and cable are placed. This invention fixes the wire and cable to two clamps, then activates the control switch of the drive motor. The drive motor rotates a second bevel gear. Since the second bevel gear meshes with the first bevel gear, its rotation drives the first bevel gear to rotate, thereby rotating the vertical threaded column. The rotation of the vertical threaded column causes the second lifting slider to move up and down. Because the end of the lifting column away from the square end plate is located on the lower surface of the first lifting slider, the up-and-down movement of the second lifting slider causes the first lifting slider and the impact block to move up and down, thus placing the impact block at a suitable height.

[0005] To address the aforementioned issues, existing patents offer solutions. However, when conducting impact tests on cables, the rigid fixing method results in poor adaptability, making it unsuitable for cables of varying thicknesses. Furthermore, the clamping force can be too high, leading to cable damage that is misinterpreted as impact force-related damage data. Additionally, the fixed state of the clamped cable during testing fails to simulate the tension and looseness conditions encountered in real-world use, resulting in limited and unreliable test data.

[0006] Therefore, a test structure for the impact resistance performance of cables is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a test structure for the impact resistance performance of cables, which can solve the problems of poor adaptability of existing fixtures, easy misjudgment of data, and single test method, resulting in low data reliability.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a cable impact resistance test structure, including a test platform, a tension adjustment mechanism movably connected to the top of the test platform, and a buffer clamping mechanism movably connected to the outside of the tension adjustment mechanism;

[0009] The buffer clamping mechanism includes a support plate, a clamping plate, a clamping assembly, a nested telescopic block, a pressure plate, a telescopic support column, and a compression spring. The support plate is movably connected to the outside of the tension adjustment mechanism. The clamping plate is slidably connected to the right side of the left support plate and to the left side of the right support plate. The clamping assembly is movably connected to the outside of the support plate. The nested telescopic block is fixedly connected to the rear side of the front clamping plate and to the front side of the rear clamping plate. The pressure plate is fixedly connected to the front and rear sides of the inner side of the nested telescopic block. The telescopic support column is fixedly connected to the outside of the pressure plate, and the compression spring is fixedly connected to the outside of the telescopic support column.

[0010] Preferably, the tension adjustment mechanism includes a hydraulic cylinder, a linkage block, a rotating power arm, a linkage rod, and a support column.

[0011] Preferably, the hydraulic cylinder is fixedly connected to the top of the test bench, the linkage block is fixedly connected to the top of the hydraulic cylinder, the rotating power arm is rotatably connected to both sides of the linkage block, and the rotating power arm is rotatably connected to the outside of the linkage rod.

[0012] Preferably, the linkage rod is fixedly connected to the front and rear sides of the support column, the support column is slidably connected to both sides of the top of the test bench, the left support plate is fixedly connected to the right side of the left support column, and the right support plate is fixedly connected to the left side of the right support column.

[0013] Preferably, the clamping assembly includes a servo motor, a drive gear, a support box, and a linkage gear plate.

[0014] Preferably, the servo motor is movably connected to the inner side of the support column, the drive gear is fixedly connected to the output end of the servo motor, the left drive gear is located on the right side of the left support plate, the right drive gear is located on the left side of the right support plate, the linkage gear plate is meshed with the top and bottom of the drive gear, the top linkage gear plate is fixedly connected to the inner side of the rear clamping plate, the top linkage gear plate is movably connected to the inner side of the front clamping plate, the bottom linkage gear plate is fixedly connected to the inner side of the front clamping plate, the bottom linkage gear plate is movably connected to the inner side of the rear clamping plate, the linkage gear plate is slidably connected to the outer side of the support plate, the support box is fixedly connected to the outer side of the support plate, and the support box is located on the outer side of the drive gear.

[0015] Preferably, a transmission guide rail is fixedly connected to the rear side of the test platform, and a support frame is movably connected to the top of the transmission guide rail.

[0016] Preferably, a linear motor is movably connected to the top of the support frame, and an impact block is fixedly connected to the output end of the linear motor.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application, by setting up a clamping buffer mechanism, can use a servo motor to drive the linkage toothed plate to adaptively clamp the cable. Combined with the stepped buffer clamping within the nested telescopic block, it can effectively solve the potential problem of rigid fixation. Through the reverse movement of the linkage toothed plate and the contraction and deformation of the telescopic block, it can automatically adapt to cables of different diameters. The stepped elastic buffer structure absorbs stress step by step during clamping, avoiding local overload caused by instantaneous rigid clamping. With the precise torque control of the servo motor, the clamping force is stabilized within the safe threshold, ensuring the test fixation strength and avoiding misjudgment of test data due to mechanical damage.

[0019] 2. This application, by setting up a tension adjustment mechanism, enables dynamic adjustment of the cable clamping spacing through a hydraulic cylinder driving the linkage rod and support column. This allows for pre-adjustment of the support spacing based on the cable length before testing, avoiding the poor adaptability issues of traditional fixing fixtures. During testing, the cable tension and slack states can be adjusted in real time, significantly improving the diversity and authenticity of test data by simulating dynamic tension changes in real-world use. Addressing the deficiency of fixed cable states in traditional testing, this device converts the linear motion of the hydraulic cylinder into the horizontal displacement of the support column through a mechanical transmission system. This allows the cable to be in different tension states during testing, thus covering more real-world working conditions and effectively solving the technical pain points of single test data and low reliability, providing a more reliable basis for cable performance evaluation. Attached Figure Description

[0020] Figure 1This is an overall structural diagram of the cable impact resistance test structure of this utility model;

[0021] Figure 2 This is a partial structural diagram of the test platform of this utility model;

[0022] Figure 3 This is an overall structural diagram of the buffer clamping mechanism of this utility model;

[0023] Figure 4 This is an overall structural diagram of the clamping assembly of this utility model;

[0024] Figure 5 This is an overall structural diagram of the tension adjustment mechanism of this utility model.

[0025] In the diagram, 1. Test stand; 2. Tension adjustment mechanism; 21. Hydraulic cylinder; 22. Linkage block; 23. Rotating power arm; 24. Linkage rod; 25. Support column; 3. Buffer clamping mechanism; 31. Support plate; 32. Clamping plate; 33. Clamping assembly; 33a. Servo motor; 33b. Drive gear; 33c. Support box; 33d. Linkage toothed plate; 34. Nested telescopic block; 35. Pressure plate; 36. Telescopic support column; 37. Compression spring; 4. Transmission guide rail; 5. Support frame; 6. Linear motor; 7. Impact block. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-5 The present invention provides the following technical solution:

[0028] A cable impact resistance test structure includes a test platform 1, a tension adjustment mechanism 2 movably connected to the top of the test platform 1, and a buffer clamping mechanism 3 movably connected to the outside of the tension adjustment mechanism 2.

[0029] The buffer clamping mechanism 3 includes a support plate 31, a clamping plate 32, a clamping assembly 33, a nested telescopic block 34, a pressure plate 35, a telescopic support column 36, and a compression spring 37. The support plate 31 is movably connected to the outside of the tension adjustment mechanism 2. The clamping plate 32 is slidably connected to the right side of the left support plate 31 and the left side of the right support plate 31. The clamping assembly 33 is movably connected to the outside of the support plate 31. The nested telescopic block 34 is fixedly connected to the rear side of the front clamping plate 32 and the front side of the rear clamping plate 32. The pressure plate 35 is fixedly connected to the front and rear sides of the inner side of the nested telescopic block 34. The telescopic support column 36 is fixedly connected to the outside of the pressure plate 35, and the compression spring 37 is fixedly connected to the outside of the telescopic support column 36.

[0030] In this embodiment: the support plate 31 can fix the outer structure of the support plate 31 and the cable clamping. The clamping assembly 33 can adjust the clamping plate 32 on the outside of the support plate 31 to clamp one end of the cable. The nested telescopic block 34 can generate nested contraction during clamping, and press the pressure plate 35, telescopic support column 36 and compression spring 37 when contracting to achieve stepped buffering, thereby adapting to cables of different thicknesses and buffering the clamping force.

[0031] Specifically, such as Figure 1 , Figure 2 , Figure 5 As shown, the tension adjustment mechanism 2 includes a hydraulic cylinder 21, a linkage block 22, a rotating power arm 23, a linkage rod 24, and a support column 25.

[0032] Specifically, such as Figure 1 , Figure 2 , Figure 5 As shown, the hydraulic cylinder 21 is fixedly connected to the top of the test bench 1, the linkage block 22 is fixedly connected to the top of the hydraulic cylinder 21, the rotating power arm 23 is rotatably connected to both sides of the linkage block 22, and the rotating power arm 23 is rotatably connected to the outside of the linkage rod 24.

[0033] Specifically, such as Figure 1 , Figure 2 , Figure 5 As shown, the linkage rod 24 is fixedly connected to the front and rear sides of the support column 25, the support column 25 is slidably connected to both sides of the top of the test bench 1, the left support plate 31 is fixedly connected to the right side of the left support column 25, and the right support plate 31 is fixedly connected to the left side of the right support column 25.

[0034] In this embodiment: the hydraulic cylinder 21 is activated before testing, and its lifting or lowering causes the top linkage block 2 to rise and fall, and pulls the patented lever arms 23 on both sides. The lever arms 23 pull the linkage rods 24 on both sides to move inward or outward in sync, driving the support column 25 on the rear side of the linkage rod 24, thereby adjusting the spacing of the support column 25. In this way, the spacing can be adjusted according to the cable length before clamping the cable, and the tension or looseness of the cable can be controlled during testing, making the test more realistic and the data more convincing.

[0035] Specifically, such as Figure 3 , Figure 4 As shown, the clamping assembly 33 includes a servo motor 33a, a drive gear 33b, a support box 33c, and a linkage gear plate 33d.

[0036] Specifically, such as Figure 3 , Figure 4 As shown, servo motor 33a is movably connected to the inner side of support column 25, drive gear 33b is fixedly connected to the output end of servo motor 33a, left drive gear 33b is located on the right side of left support plate 31, right drive gear 33b is located on the left side of right support plate 31, linkage gear plate 33d is meshed with the top and bottom of drive gear 33b, top linkage gear plate 33d is fixedly connected to the inner side of rear clamping plate 32, top linkage gear plate 33d is movably connected to the inner side of front clamping plate 32, bottom linkage gear plate 33d is fixedly connected to the inner side of front clamping plate 32, bottom linkage gear plate 33d is movably connected to the inner side of rear clamping plate 32, linkage gear plate 33d is slidably connected to the outer side of support plate 31, support box 33c is fixedly connected to the outer side of support plate 31, and support box 33c is located on the outer side of drive gear 33b.

[0037] In this embodiment: by activating the servo motor 33a on the outside of the support column 25, the drive gear 33b at the output end of the servo motor 33a rotates in the support box 33c. The outer gear drives the linkage tooth plate 33d that meshes with it to slide, so that the upper and lower linkage tooth plates 33d move in opposite directions, driving the clamping plate 32 connected to the outside to move inward or outward synchronously, thereby clamping one end of the cable.

[0038] Specifically, such as Figure 1 As shown, a transmission guide rail 4 is fixedly connected to the rear side of the test platform 1, and a support frame 5 is movably connected to the top of the transmission guide rail 4.

[0039] Specifically, such as Figure 1 As shown, a linear motor 6 is movably connected to the top of the support frame 5, and an impact block 7 is fixedly connected to the output end of the linear motor 6.

[0040] In this embodiment: the support frame 5 moves and adjusts its position within the transmission guide rail 4, the test point is selected, the linear motor 6 is started, and the impact block 7 impacts the cable to achieve the impact resistance test.

[0041] Working principle: During the cable impact resistance test, a section of the cable to be tested is first cut, and its two ends are fixed to the outside of the two support columns 25. Manually or with the aid of tools, one end of the cable is placed between the two sets of clamping plates 32 on the top of the support column 25 and the outside of the support plate 31. Then, the servo motor 33a on the outside of the support column 25 is started. The drive gear 33b at the output end of the motor rotates in the support box 33c. Its outer teeth drive the linkage tooth plate 33d that meshes with it to slide, so that the two sets of linkage tooth plates 33d move in opposite directions, thereby driving the clamping plates 32 connected to the outside to move inward or outward at the same time to clamp one end of the cable. When the clamping surface of the clamping plate 32 is close to the cable, the nested telescopic block 34 on the clamping side of the clamping plate 32 will first contact the cable and press against it. During the clamping process, the nested telescopic block 34 will squeeze and contract against each other. In this process, the internal elastic buffer structure composed of two sets of pressure plates 35, telescopic support column 36 and compression spring 37 is compressed. This structure is set in the nested Each section of the telescopic block 34 allows for stepped buffer clamping. The above operation is repeated on the other end of the cable to complete the cable fixation. This method can adapt to cables of different thicknesses, is easy to install, and can avoid damage caused by excessive clamping force during testing, preventing misjudgment of damage data in impact resistance testing. Before testing, the hydraulic cylinder 21 is activated. The raising or lowering of the hydraulic cylinder 21 will drive the linkage block 22 to raise or lower, causing the outer rotating power arm 23 to rotate, pulling the two linkage rods 24 to move inward or outward simultaneously, driving the support column 25 on the rear side of the linkage rod 24, thereby adjusting the spacing of the support column 25. In this way, the spacing can be adjusted according to the cable length before clamping the cable, and the tension or looseness of the cable can also be adjusted during testing, making the test more realistic and the data more convincing. After completing the above preparation process, the support frame 5 moves and adjusts its position within the transmission guide rail 4, selects the test point, and starts the linear motor 6 to impact the cable through the impact block 7 to achieve impact resistance testing.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A test structure for the impact resistance performance of cables, comprising a test stand (1), characterized in that: The top of the test stand (1) is movably connected to a tension adjustment mechanism (2), and the outside of the tension adjustment mechanism (2) is movably connected to a buffer clamping mechanism (3). The buffer clamping mechanism (3) includes a support plate (31), a clamping plate (32), a clamping assembly (33), a nested telescopic block (34), a pressure plate (35), a telescopic support column (36), and a compression spring (37). The support plate (31) is movably connected to the outside of the tension adjustment mechanism (2). The clamping plate (32) is slidably connected to the right side of the left support plate (31) and the left side of the right support plate (31). The clamping assembly (33) is movably connected to the outside of the support plate (31). The nested telescopic block (34) is fixedly connected to the rear side of the front clamping plate (32) and the front side of the rear clamping plate (32). The pressure plate (35) is fixedly connected to the front and rear sides of the inner side of the nested telescopic block (34). The telescopic support column (36) is fixedly connected to the outside of the pressure plate (35). The compression spring (37) is fixedly connected to the outside of the telescopic support column (36).

2. The cable impact resistance test structure according to claim 1, characterized in that: The tension adjustment mechanism (2) includes a hydraulic cylinder (21), a linkage block (22), a rotating power arm (23), a linkage rod (24), and a support column (25).

3. The cable impact resistance test structure according to claim 2, characterized in that: The hydraulic cylinder (21) is fixedly connected to the top of the test bench (1), the linkage block (22) is fixedly connected to the top of the hydraulic cylinder (21), the rotating power arm (23) is rotatably connected to both sides of the linkage block (22), and the rotating power arm (23) is rotatably connected to the outside of the linkage rod (24).

4. The cable impact resistance test structure according to claim 2, characterized in that: The linkage rod (24) is fixedly connected to the front and rear sides of the support column (25), the support column (25) is slidably connected to both sides of the top of the test bench (1), the left support plate (31) is fixedly connected to the right side of the left support column (25), and the right support plate (31) is fixedly connected to the left side of the right support column (25).

5. The cable impact resistance test structure according to claim 1, characterized in that: The clamping assembly (33) includes a servo motor (33a), a drive gear (33b), a support box (33c), and a linkage toothed plate (33d).

6. The cable impact resistance test structure according to claim 5, characterized in that: The servo motor (33a) is movably connected to the inner side of the support column (25), and the drive gear (33b) is fixedly connected to the output end of the servo motor (33a). The left drive gear (33b) is located on the right side of the left support plate (31), and the right drive gear (33b) is located on the left side of the right support plate (31). The linkage gear plate (33d) is meshed with the top and bottom of the drive gear (33b), and the top linkage gear plate (33d) is fixedly connected to the rear clamping plate (32). Inside, the top linkage toothed plate (33d) is movably connected to the inside of the front clamping plate (32), the bottom linkage toothed plate (33d) is fixedly connected to the inside of the front clamping plate (32), the bottom linkage toothed plate (33d) is movably connected to the inside of the rear clamping plate (32), the linkage toothed plate (33d) is slidably connected to the outside of the support plate (31), the support box (33c) is fixedly connected to the outside of the support plate (31), and the support box (33c) is located outside the drive gear (33b).

7. The cable impact resistance test structure according to claim 1, characterized in that: The test stand (1) is fixedly connected to the rear side of a transmission guide rail (4), and the top of the transmission guide rail (4) is movably connected to a support frame (5).

8. The cable impact resistance test structure according to claim 7, characterized in that: A linear motor (6) is movably connected to the top of the support frame (5), and an impact block (7) is fixedly connected to the output end of the linear motor (6).

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