A tension testing machine for cables

Abstract

The utility model relates to cable performance detection equipment technical field, concretely is a tension testing machine for cable, including roof, tensile test mechanism and operation control mechanism, tensile test mechanism and operation control mechanism fixed connection in the top of roof, the bottom fixed connection of roof has mainframe platform, one side fixed connection of roof top has copper wire fixture, the tensile test mechanism includes fixed connection in the other side of roof tensile platform, the tensile test mechanism includes positioning mobile subassembly and clamping subassembly, the positioning mobile subassembly includes safe positioning ring. In the utility model, through the setting of safe positioning ring, tensile moving pole and limit bolt, safe positioning ring can preset the distance apart of tensile upper and lower clamps according to cable length, when moving upper clamp reaches positioning ring, the equipment stops automatically, avoids the clamp damage or component deformation caused by overtravel impact, and can avoid the collision between upper and lower clamps and cause damage etc.

Description

Technical Field

[0001] This utility model relates to the technical field of cable performance testing equipment, and in particular to a tensile testing machine for cables. Background Technology

[0002] As the core carrier of power transmission and signal transmission, the tensile properties of cables directly determine their safety and service life. Therefore, tensile tests are required to verify their mechanical properties before they leave the factory.

[0003] Existing technical solutions lack safety protection and real-time monitoring functions during use. When a cable suddenly breaks, the clamps are prone to impacting the equipment due to inertia, posing a safety hazard. To address these issues, this utility model provides a tensile testing machine for cables. Utility Model Content

[0004] The purpose of this invention is to address the lack of safety protection and real-time monitoring functions in existing technologies by proposing a tensile testing machine for cables.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a tensile testing machine for cables, comprising a top plate, a tensile testing mechanism, and an operation control mechanism, wherein the tensile testing mechanism and the operation control mechanism are fixedly connected to the top of the top plate, a main platform is fixedly connected to the bottom of the top plate, a copper wire clamp is fixedly connected to one side of the top of the top plate, the tensile testing mechanism includes a tensile platform fixedly connected to the other side of the top plate, and the tensile testing mechanism includes a positioning and moving component and a clamping component.

[0006] The positioning and moving component includes a safety positioning ring, the clamping component includes an anti-slip clamping plate, and the positioning and moving component is symmetrically arranged on both sides of the clamping component.

[0007] The positioning and moving component includes a fixed plate symmetrically fixedly connected to one side of the tensioning platform. A tensioning moving rod is fixedly connected inside the fixed plate. A safety positioning ring is slidably connected to the outer surface of the tensioning moving rod. A limit bolt is threadedly connected to the outer surface of the safety positioning ring. The safety positioning ring is threadedly connected to the outer surface of the tensioning moving rod through the limit bolt.

[0008] Furthermore, the clamping assembly includes a lifting connecting plate slidably connected to the outer surface of the tension moving rod, a sliding plate being threadedly connected to the outer surface of the lifting connecting plate, and a connector being threadedly connected to the outer surface of the sliding plate through the connector.

[0009] Furthermore, a tension sensor is fixedly connected to the bottom of the sliding plate, and a movable upper clamp is threadedly connected to the bottom of the tension sensor. The clamping assembly includes a fixed lower clamp threadedly connected to the top of the top plate.

[0010] Furthermore, the anti-slip clamping plate is fixedly connected to the inner wall of the movable upper clamp and the fixed lower clamp. The outer surfaces of the movable upper clamp and the fixed lower clamp are threadedly connected to the limiting arc plate. The two sides of the limiting arc plate are threadedly connected to the limiting components. The two sides of the limiting arc plate are threadedly connected to the adjusters. The bottom of the adjuster is rotatably connected to the bearing. The outer surface of the bearing is fitted into the interior of the symmetrically arranged anti-slip clamping plates.

[0011] Furthermore, the tension sensor and the movable upper clamp are threadedly connected to limit rods on both sides. The movable upper clamp and the fixed lower clamp are symmetrically arranged. Fasteners are threadedly connected to both sides of the fixed lower clamp. The fixed lower clamp is threadedly connected to the top plate through the fasteners.

[0012] Furthermore, the tensile testing mechanism includes a servo motor fixedly connected inside the main platform, and a threaded rod fixedly connected to the output end of the servo motor. The threaded rod is rotatably connected inside the tensile platform, and the outer surface of the threaded rod is threadedly connected to the sliding plate.

[0013] Furthermore, the operation control mechanism includes an operation platform fixedly connected to the outer surface of the tension platform, a connecting wire fixedly connected to the bottom of the operation platform, the other end of the connecting wire fixedly connected to the outer surface of the tension sensor, the tension sensor including a power button fixedly connected to one side of the host platform, the tension sensor including an emergency stop button fixedly connected to the other side of the host platform, and anti-slip bases fixedly connected to the four corners of the bottom of the host platform.

[0014] Furthermore, the tension sensor includes a power button fixedly connected to one side of the host platform, the tension sensor includes an emergency stop button fixedly connected to the other side of the host platform, and anti-slip bases are fixedly connected to the four corners of the bottom of the host platform.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, by setting a safety positioning ring, a tension moving rod and a limiting bolt, the safety positioning ring can preset the distance between the upper and lower clamps according to the cable length. When the upper clamp touches the positioning ring, the equipment automatically stops to avoid damage to the clamps or deformation of the parts caused by overtravel impact, and at the same time, it can avoid damage caused by collision between the upper and lower clamps.

[0016] 2. In this utility model, by setting up an anti-slip clamping plate, a limiting arc plate, and a movable upper clamp, the anti-slip clamping plate, in conjunction with the adaptive adjustment of the limiting arc plate, can achieve full-coverage clamping of the diameter cable. Compared with the traditional single-plane clamping plate, it can avoid cable slippage. At the same time, the combination structure of the adjuster and the bearing can make the clamping force evenly distributed on the cable surface, avoiding local damage to the cable insulation layer or conductor, ensuring that the cable sample can still be used for subsequent insulation performance testing after testing, and reducing the sample loss rate. Attached Figure Description

[0017] Figure 1 A three-dimensional structural diagram of a tensile testing machine for cables is provided for this utility model; Figure 2 This utility model provides a structural schematic diagram of a safety positioning ring for a cable tensile testing machine; Figure 3 This utility model proposes a tensile testing machine for cables. Figure 2 Enlarged view of point A; Figure 4 This utility model provides a structural schematic diagram of a limiting arc plate in a tensile testing machine for cables; Figure 5 This utility model provides a structural schematic diagram of an anti-slip clamping plate for a cable tensile testing machine; Figure 6 This utility model proposes a tensile testing machine for cables. Figure 5 Enlarged diagram of point B.

[0018] Legend: 1. Top plate; 2. Tensile testing mechanism; 21. Tensile platform; 22. Positioning and moving assembly; 221. Safety positioning ring; 222. Fixed plate; 223. Tensile moving rod; 224. Limit bolt; 23. Clamping assembly; 231. Anti-slip clamping plate; 232. Lifting connecting plate; 233. Sliding plate; 234. Connector; 235. Tension sensor; 236. Moving upper clamp; 237. Fixed lower clamp; 238. Limiting arc plate; 239. Limiting component; 2391. Adjuster; 2392. Bearing; 2393. Limiting rod; 2394. Fastener; 24. Servo motor; 25. Threaded rod; 3. Operation control mechanism; 31. Operation platform; 32. Connecting cable; 33. Power button; 34. Emergency stop button; 35. Anti-slip base; 4. Main platform; 5. Copper wire clamp. Detailed Implementation

[0019] Please see Figure 1-6This utility model provides a technical solution: a tensile testing machine for cables, including a top plate 1, a tensile testing mechanism 2 and an operation control mechanism 3. The tensile testing mechanism 2 and the operation control mechanism 3 are fixedly connected to the top of the top plate 1. A main platform 4 is fixedly connected to the bottom of the top plate 1. A copper wire clamp 5 is fixedly connected to one side of the top of the top plate 1. The tensile testing mechanism 2 includes a tensile platform 21 fixedly connected to the other side of the top plate 1. The tensile testing mechanism 2 includes a positioning and moving component 22 and a clamping component 23.

[0020] The specific setup and function of its tensile testing mechanism 2 and operation control mechanism 3 will be described in detail below.

[0021] In this embodiment: the positioning and moving component 22 includes a safety positioning ring 221, the clamping component 23 includes an anti-slip clamping plate 231, and the positioning and moving component 22 is symmetrically arranged on both sides of the clamping component 23.

[0022] The positioning and moving assembly 22 includes a fixed plate 222 symmetrically fixedly connected to one side of the tensioning platform 21. A tensioning moving rod 223 is fixedly connected inside the fixed plate 222. A safety positioning ring 221 is slidably connected to the outer surface of the tensioning moving rod 223. A limit bolt 224 is threadedly connected to the outer surface of the safety positioning ring 221. The safety positioning ring 221 is threadedly connected to the outer surface of the tensioning moving rod 223 through the limit bolt 224.

[0023] The effects achieved by the above components are as follows: the symmetrical arrangement of the positioning and moving components 22 on both sides of the clamping components 23, together with the tension moving rod 223 fixed by the fixing plate 222, forms a two-way guiding structure, which can limit the clamping components 23 to move only along the axial direction of the tension moving rod 223, avoiding deviation of the tensile force direction caused by lateral offset. The safety positioning ring 221 can be slidably adjusted to the corresponding stroke position according to the length of the cable sample. After being locked by the limit bolt 224, it can accurately limit the maximum movement distance of the clamping components 23, prevent overtravel impact on the tensioning platform 21 or the top plate 1, and at the same time avoid excessive stretching of the cable sample due to overtravel, ensuring that the test data meets the standard requirements.

[0024] Specifically, the clamping assembly 23 includes a lifting connecting plate 232 that is slidably connected to the outer surface of the tension moving rod 223. A sliding plate 233 is threadedly connected to the outer surface of the lifting connecting plate 232. A connector 234 is threadedly connected to the outer surface of the lifting connecting plate 232. The lifting connecting plate 232 is threadedly connected to the outer surface of the sliding plate 233 through the connector 234.

[0025] The effects achieved by the above components are as follows: the sliding cooperation between the lifting connecting plate 232 and the tension moving rod 223 provides a stable moving carrier for the clamping assembly 23, ensuring that it moves synchronously with the sliding plate 233 and avoiding fluctuations in tension speed due to loose connection. At the same time, the detachable threaded connection structure facilitates the maintenance and replacement of the lifting connecting plate 232 or the sliding plate 233 in the later stage.

[0026] Specifically, a tension sensor 235 is fixedly connected to the bottom of the sliding plate 233, and a movable upper clamp 236 is threadedly connected to the bottom of the tension sensor 235. The clamping assembly 23 includes a fixed lower clamp 237 threadedly connected to the top of the top plate 1.

[0027] The effects achieved by the above components are as follows: the fixed connection between the sliding plate 233 and the tension sensor 235 can directly transmit the tension received by the moving upper clamp 236 during the stretching process to the tension sensor 235, reducing the loss in the force transmission path and ensuring the accuracy of the tension data acquisition. The upper and lower clamps 236 and the fixed lower clamp 237 are set up in a corresponding manner to form a bidirectional clamping of the cable sample, avoiding the sample tilting caused by the traditional single-sided clamping and ensuring that the cable is subjected to uniform force during the stretching process.

[0028] Specifically, the anti-slip clamping plate 231 is fixedly connected to the inner wall of the movable upper clamp 236 and the fixed lower clamp 237. The outer surfaces of the movable upper clamp 236 and the fixed lower clamp 237 are threadedly connected to the limiting arc plate 238. The two sides of the limiting arc plate 238 are threadedly connected to the limiting parts 239. The two sides of the limiting arc plate 238 are threadedly connected to the adjuster 2391. The bottom of the adjuster 2391 is rotatably connected to the bearing 2392. The outer surface of the bearing 2392 is fitted into the interior of the symmetrically arranged anti-slip clamping plate 231.

[0029] The effects achieved by the above components are as follows: the anti-slip clamping plate 231 prevents slippage between the cable sample and the clamping plate during tensile testing; the limiting arc plate 238 adapts to the shape of a round cable and can wrap around the circumference of the cable to prevent the cable from coming off the side of the clamp during the stretching process; the clamping distance of the anti-slip clamping plate 231 can be adjusted by rotating the adjuster 2391 in conjunction with the rotation of the bearing 2392 to prevent loosening after adjustment, ensure stable clamping force, and avoid test data deviation caused by unstable clamping force.

[0030] Specifically, the tension sensor 235 and the movable upper clamp 236 are threadedly connected to limit rods 2393 on both sides. The movable upper clamp 236 and the fixed lower clamp 237 are symmetrically arranged. The fixed lower clamp 237 is threadedly connected to fasteners 2394 on both sides. The fixed lower clamp 237 is threadedly connected to the top plate 1 through the fasteners 2394.

[0031] The effects achieved by the above components are as follows: the limiting rod 2393 ensures that the tension direction is consistent with the cable axis; the fixed lower clamp 237 is rigidly connected to the top plate 1 through the fastener 2394, and has no displacement under the action of tension, providing a stable fixed end for the cable sample; the symmetrical arrangement of the movable upper clamp 236 and the fixed lower clamp 237 can make the force points at both ends of the cable sample on the same vertical line, further ensuring that the tension force is applied evenly.

[0032] Specifically, the tensile testing mechanism 2 includes a servo motor 24 fixedly connected inside the host platform 4. The output end of the servo motor 24 is fixedly connected to a threaded rod 25. The threaded rod 25 is rotatably connected inside the tensile platform 21. The outer surface of the threaded rod 25 is threadedly connected to the sliding plate 233.

[0033] The effect achieved by the above components is that the servo motor 24 drives the threaded rod 25 to rotate, which in turn drives the sliding plate 233 to move at a constant speed along the tension moving rod 223, thereby achieving uniform or variable speed tensioning and meeting the needs of complex testing scenarios.

[0034] Specifically, the operation control mechanism 3 includes an operation platform 31 fixedly connected to the outer surface of the tension platform 21. A connecting line 32 is fixedly connected to the bottom of the operation platform 31. The other end of the connecting line 32 is fixedly connected to the outer surface of the tension sensor 235. The tension sensor 235 includes a power button 33 fixedly connected to one side of the host platform 4 and an emergency stop button 34 fixedly connected to the other side of the host platform 4. Anti-slip bases 35 are fixedly connected to the four corners of the bottom of the host platform 4.

[0035] The above components achieve the following effects: the operating platform 31 provides a convenient operating carrier for the operator. The operating platform 31 is connected to the tension sensor 235 through the connecting cable 32, so that the movement of the operating platform 31 can be sensed by the tension sensor 235 and converted into corresponding tension data, thereby realizing the monitoring of tension during the stretching operation.

[0036] Specifically, the tension sensor 235 includes a power button 33 fixedly connected to one side of the host platform 4, an emergency stop button 34 fixedly connected to the other side of the host platform 4, and anti-slip bases 35 fixedly connected to the four corners of the bottom of the host platform 4.

[0037] The effects achieved by the above components are as follows: the power button 33 can control the power supply of the host platform 4 and the entire equipment, making it convenient to start and stop the equipment; the emergency stop button 34 can quickly cut off the operation of the equipment in case of an emergency, ensuring the safety of the equipment and the operator; and the anti-slip base 35 increases the friction between the host platform 4 and the placement surface, preventing the equipment from sliding during operation and ensuring the stability of the equipment operation.

[0038] Working principle: The operator places both ends of the cable sample between the movable upper clamp 236 and the fixed lower clamp 237 respectively. The anti-slip clamping plate 231 is pushed by the rotary adjuster 2391 to clamp the cable. The rotation characteristics of the bearing 2392 ensure smooth adjustment. At the same time, the limiting arc plate 238 fits against the outer circumference of the cable to form a wrap-around limit. The limiting part 239 prevents the cable from slipping laterally. According to the length of the cable sample, the safety positioning ring 221 on the sliding tension moving rod 223 is slid to the preset stroke position and locked by the limiting bolt 224 to form mechanical limit protection.

[0039] After pressing the power button 33, the host platform 4 is powered on and started. The servo motor 24 and the tension sensor 235 enter the working state. The operator sets parameters such as the tensile rate and target tensile force through the operating platform 31. The parameter signals are transmitted to the host system through the connecting line 32. At the same time, the anti-slip base 35 increases the friction to ensure that the host platform 4 remains stable during the test.

[0040] After receiving the command, the servo motor 24 drives the threaded rod 25 to rotate. Since the sliding plate 233 is threadedly connected to the threaded rod 25 and is guided and restricted by the tension moving rods 223 on both sides, the sliding plate 233 drives the lifting connecting plate 232 and the moving upper clamp 236 to rise at a constant speed along the axial direction. At this time, the fixed lower clamp 237 is rigidly connected to the top plate 1 through the fastener 2394 to form a fixed end. The relative movement of the moving upper clamp 236 and the fixed lower clamp 237 applies an axial tensile force to the cable sample.

[0041] During the stretching process, the tension on the cable is transmitted to the tension sensor 235 through the moving upper clamp 236. The sensor converts the mechanical signal into an electrical signal and transmits it to the host platform 4 in real time. After processing, the real-time tension value is displayed. The limit rod 2393 ensures the coaxiality of the moving upper clamp 236 and the tension sensor 235, avoiding measurement errors caused by lateral force interference.

[0042] When the moving upper clamp 236 approaches the safety positioning ring 221, the mechanical limit stops it from moving further to prevent overtravel damage to the equipment or the sample. In case of an emergency, pressing the emergency stop button 34 can immediately cut off the power to the servo motor 24, terminate the stretching action, and ensure the safety of personnel and equipment.

Claims

1. A tensile testing machine for cables, comprising a top plate (1), a tensile testing mechanism (2), and an operation control mechanism (3), characterized in that: The tensile testing mechanism (2) and the operation control mechanism (3) are fixedly connected to the top of the top plate (1). The bottom of the top plate (1) is fixedly connected to the main platform (4). A copper wire clamp (5) is fixedly connected to one side of the top of the top plate (1). The tensile testing mechanism (2) includes a tensile platform (21) fixedly connected to the other side of the top plate (1). The tensile testing mechanism (2) includes a positioning and moving component (22) and a clamping component (23). The positioning and moving component (22) includes a safety positioning ring (221), the clamping component (23) includes an anti-slip clamping plate (231), and the positioning and moving component (22) is symmetrically arranged on both sides of the clamping component (23). The positioning and moving component (22) includes a fixed plate (222) symmetrically fixedly connected to one side of the tensioning platform (21). A tensioning moving rod (223) is fixedly connected inside the fixed plate (222). A safety positioning ring (221) is slidably connected to the outer surface of the tensioning moving rod (223). A limit bolt (224) is threadedly connected to the outer surface of the safety positioning ring (221). The safety positioning ring (221) is threadedly connected to the outer surface of the tensioning moving rod (223) through the limit bolt (224).

2. A tensile testing machine for cables according to claim 1, characterized in that: The clamping assembly (23) includes a lifting connecting plate (232) slidably connected to the outer surface of the tension moving rod (223). The outer surface of the lifting connecting plate (232) is threadedly connected to a sliding plate (233). The outer surface of the lifting connecting plate (232) is threadedly connected to a connector (234). The lifting connecting plate (232) is threadedly connected to the outer surface of the sliding plate (233) through the connector (234).

3. A tensile testing machine for cables according to claim 2, characterized in that: A tension sensor (235) is fixedly connected to the bottom of the sliding plate (233), and a movable upper clamp (236) is threadedly connected to the bottom of the tension sensor (235). The clamping assembly (23) includes a fixed lower clamp (237) threadedly connected to the top of the top plate (1).

4. A tensile testing machine for cables according to claim 1, characterized in that: The anti-slip clamping plate (231) is fixedly connected to the inner wall of the movable upper clamp (236) and the fixed lower clamp (237). The outer surfaces of the movable upper clamp (236) and the fixed lower clamp (237) are threadedly connected to the limiting arc plate (238). The two sides of the limiting arc plate (238) are threadedly connected to the limiting parts (239). The two sides of the limiting arc plate (238) are threadedly connected to the adjuster (2391). The bottom of the adjuster (2391) is rotatably connected to the bearing (2392). The outer surface of the bearing (2392) is fitted into the interior of the symmetrically arranged anti-slip clamping plate (231).

5. A tensile testing machine for cables according to claim 3, characterized in that: The tension sensor (235) and the movable upper clamp (236) are threadedly connected to limit rods (2393) on both sides. The movable upper clamp (236) and the fixed lower clamp (237) are symmetrically arranged. The fixed lower clamp (237) is threadedly connected to fasteners (2394) on both sides. The fixed lower clamp (237) is threadedly connected to the top plate (1) through the fasteners (2394).

6. A tensile testing machine for cables according to claim 1, characterized in that: The tensile testing mechanism (2) includes a servo motor (24) fixedly connected inside the host platform (4). The output end of the servo motor (24) is fixedly connected to a threaded rod (25). The threaded rod (25) is rotatably connected inside the tensile platform (21). The outer surface of the threaded rod (25) is threadedly connected to the sliding plate (233).

7. A tensile testing machine for cables according to claim 1, characterized in that: The operation control mechanism (3) includes an operation platform (31) fixedly connected to the outer surface of the tension platform (21), and a connecting line (32) fixedly connected to the bottom of the operation platform (31). The other end of the connecting line (32) is fixedly connected to the outer surface of the tension sensor (235).

8. A tensile testing machine for cables according to claim 3, characterized in that: The tension sensor (235) includes a power button (33) fixedly connected to one side of the host platform (4), and an emergency stop button (34) fixedly connected to the other side of the host platform (4). Anti-slip bases (35) are fixedly connected to the four corners of the bottom of the host platform (4).

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