Cable tensile testing device
By improving the clamping structure of the cable tensile strength testing device, and utilizing a combination of clamping plates and moving columns, the problem of screw wear was solved, enabling rapid clamping and releasing of cables, extending the device's lifespan, and improving safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-27
- Publication Date
- 2026-03-17
AI Technical Summary
In existing cable tensile strength testing devices, the repeated rotation of the screw leads to severe wear and reduces its service life.
The device employs a clamping plate and movable column structure. The movable plate and clamping plate move to hold the cable via a threaded sleeve. After the test is completed, the clamping plate is automatically released by a spring. The protective plate and torsion spring prevent the cable from breaking, simplifying the clamping and releasing process.
It enables rapid clamping and releasing of cables, extends the life of the screw, improves testing efficiency, and prevents operator injury.
Smart Images
Figure CN224004833U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cable testing, and in particular to a cable tensile strength testing device. Background Technology
[0002] Cables are a general term for items such as optical cables and electrical cables. They are made of one or more conductors twisted together and are used as a transmission medium to transmit electrical energy, signals or data.
[0003] The performance of cables under tensile force is measured, including the maximum tensile force that the cable can withstand, the elongation during the tensile process, and the permanent deformation under a certain tensile force, in order to evaluate the cable's ability to resist tensile failure during installation and use, and to ensure that it can operate safely and reliably under specified operating conditions.
[0004] Existing cable tensile testing methods require clamping the cable before testing. When clamping the cable, rotating a screw moves the clamping plate towards the fixed base to hold the cable. When releasing the cable, the screw needs to be rotated in the opposite direction. Repeated rotation of the screw accelerates wear and reduces its service life. Therefore, a cable tensile testing device is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a cable tensile strength testing device, which aims to improve the problem of accelerated wear caused by repeated rotation of the screw in the prior art.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a cable tensile strength testing device, comprising a base, a fixing plate fixedly connected to the upper outer wall of the base, a fixing seat fixedly connected to the upper outer wall of the base, a fixing rod fixedly connected to the front outer wall of the fixing seat, a movable plate slidably connected through the outer wall of the fixing rod, a threaded sleeve fixedly connected to the inner wall of the movable plate, a guide block elastically connected to the inner wall of the movable plate by a spring, a movable column fixedly connected to the outer wall of the guide block, a clamping plate fixedly connected to the rear outer wall of the movable column, a screw rotatably connected to the front inner wall of the fixing seat, an insert rod snapped into the upper inner wall of the movable plate, a protective component provided on the inner wall of the fixing plate for protection during testing, and a testing machine provided on the fixing plate.
[0007] As a further description of the above technical solution:
[0008] The protective assembly includes a protective plate, which is elastically connected to the inner wall of the fixed plate by a torsion spring, and a stop block is fixedly connected to the upper side of the base.
[0009] As a further description of the above technical solution:
[0010] One end of the spring is fixedly connected to the front outer wall of the guide block, and the other end of the spring is fixedly connected to the inner wall of the moving plate.
[0011] As a further description of the above technical solution:
[0012] The outer wall of the guide block is slidably connected to the inner wall of the moving plate.
[0013] As a further description of the above technical solution:
[0014] One end of the torsion spring is fixedly connected to the inner wall of the fixed plate, and the other end of the torsion spring is fixedly connected to the outer wall of the protective plate.
[0015] As a further description of the above technical solution:
[0016] The protective plate is rotatably connected to the upper inner wall of the base.
[0017] As a further description of the above technical solution:
[0018] Two symmetrical through holes are provided on the inner front wall of the clamping plate. The clamping plate is slidably connected to the outer wall of the fixing rod. The diameter of the through hole on the left side of the clamping plate is larger than the diameter of the screw.
[0019] As a further description of the above technical solution:
[0020] The outer wall of the screw is penetrated and threadedly connected to the inner wall of the threaded sleeve.
[0021] This utility model has the following beneficial effects:
[0022] 1. In this utility model, by setting up clamping blocks and moving columns, one end of the cable is placed between the clamping plate and the fixed seat. Rotating the screw drives the moving plate, moving column and clamping plate to move towards the fixed seat through the threaded sleeve, clamping the end of the cable. After the test is completed, the moving plug releases the fixation of the moving column. The spring causes the guide block, moving column and clamping plate to move forward, releasing the fixation of the cable. When testing cables of the same specification, one end of the cable is placed directly between the clamping plate and the fixed seat. Then, the moving column is pushed backward to drive the clamping plate to clamp the cable. The plug is engaged with the inner wall of the moving column, which can quickly clamp and release cables of the same specification.
[0023] 2. In this utility model, by setting a protective plate and a torsion spring, the protective plate can rotate. By opening the protective plate, it is convenient to clamp the cable. When the protective plate is released, the protective plate rotates back to its original position by the elastic force of the torsion spring. The protective plate is separated during the tensile test to prevent the cable from breaking and causing danger to the operator. Attached Figure Description
[0024] Figure 1 This is a three-dimensional schematic diagram of a cable tensile strength testing device proposed in this utility model;
[0025] Figure 2 This is a schematic diagram of the moving plate of a cable tensile strength testing device proposed in this utility model;
[0026] Figure 3 This is a cross-sectional view of the moving plate and a schematic diagram of the moving column of a cable tensile strength testing device proposed in this utility model;
[0027] Figure 4 This is a schematic diagram of the protective plate of a cable tensile strength testing device proposed in this utility model.
[0028] Legend:
[0029] 1. Base; 2. Fixing plate; 3. Protective plate; 4. Stop block; 5. Testing machine; 6. Fixing seat; 7. Moving plate; 8. Clamping plate; 9. Fixing rod; 10. Guide block; 11. Spring; 12. Moving column; 13. Insert rod; 14. Screw; 15. Threaded sleeve; 16. Torsion spring. Detailed Implementation
[0030] 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.
[0031] Reference Figures 1-3This utility model provides an embodiment of a cable tensile strength testing device, including a base 1, which provides support for the testing device. A fixing plate 2 is fixedly connected to the upper outer wall of the base 1, providing support for the installation of the testing machine 5. The fixing plate 2 is L-shaped and provides support for the rotation of the guard plate 3. A fixing seat 6 is fixedly connected to the upper outer wall of the base 1, providing support for the fixing of the fixing rod 9 and the rotation of the screw 14. A fixing rod 9 is fixedly connected to the front outer wall of the fixing seat 6, providing guidance for the sliding of the moving plate 7 and the clamping plate 8. A movable plate 7 is slidably connected through the outer wall of the 9. The movable plate 7 provides support for the sliding of the movable column 12 and the guide block 10. The movable plate 7 moves by the rotation of the screw 14. The movement of the movable plate 7 drives the movable column 12 and the clamping plate 8 to move. A threaded sleeve 15 is fixedly connected to the inner wall of the movable plate 7. The guide block 10 is elastically connected to the inner wall of the movable plate 7 by a spring 11. When the guide block 10 moves backward, it stretches the spring 11. One end of the spring 11 is fixedly connected to the front outer wall of the guide block 10, and the other end of the spring 11 is fixedly connected to the inner wall of the movable plate 7. The outer wall of the guide block 10 is slidably connected to the inner wall of the movable plate 7. A movable column 12 is fixedly connected to the outer wall of the guide block 10. The movement of the movable column 12 drives the movement of the guide block 10. The movable column 12 is locked to the inner wall by the insertion rod 13 for fixing the movable column 12. A clamping plate 8 is fixedly connected to the rear outer wall of the movable column 12. The clamping plate 8 cooperates with the fixing seat 6 for clamping the cable. Two symmetrical through holes are opened on the front inner wall of the clamping plate 8. The clamping plate 8 is slidably connected to the outer wall of the fixing rod 9. The diameter of the through hole on the left side of the clamping plate 8 is larger than the diameter of the screw 14. The screw 14 is rotatably connected to the front inner wall of the fixing seat 6. The rotation of the screw 14 drives the movable plate 7 to move through the threaded sleeve 15. The screw 14 is threaded through the outer wall and connected to the inner wall of the threaded sleeve 15. A plug rod 13 is snapped onto the upper inner wall of the moving plate 7. The plug rod 13 is snapped onto the inner wall of the moving column 12 to fix the position of the moving column 12. When the plug rod 13 moves upward away from the inner wall of the moving column 12, the fixation of the moving column 12 can be released. A protective component is provided on the inner wall of the fixing plate 2. The protective component is used for protection during testing. A testing machine 5 is provided on the fixing plate 2. The testing machine 5 is controlled by a controller. This is existing technology and has not been described in detail. The controller controls the testing machine 5 to clamp the cable through the clamping block on the other side to perform a tensile test.
[0032] Reference Figure 1 and Figure 4The protective components include a protective plate 3, which is used to separate the cable during the tensile test to prevent the cable from breaking and causing danger to the operator. The protective plate 3 is rotatably connected to the upper inner wall of the base 1. The protective plate 3 is elastically connected to the inner wall of the fixed plate 2 by a torsion spring 16. One end of the torsion spring 16 is fixedly connected to the inner wall of the fixed plate 2, and the other end of the torsion spring 16 is fixedly connected to the outer wall of the protective plate 3. A stop block 4 is fixedly connected to the upper side of the base 1 to position the protective plate 3.
[0033] Working principle: By rotating the guard plate 3, one end of the cable to be tested is placed between the clamping plate 8 and the fixed seat 6. By rotating the screw 14, the rotation of the screw 14 drives the moving plate 7, the moving column 12, and the clamping plate 8 towards the fixed seat 6 through the threaded sleeve 15, until the end of the cable is clamped. The other end of the cable is fixed in the upper clamp in the same way. Then, the guard plate 3 is released, and the guard plate 3 returns to its original position under the elastic force of the torsion spring 16. The tensile strength is tested by the testing machine 5. After the test is completed, the insertion rod 13 is moved upward. Release the fixation of the movable column 12. After the movable column 12 is released, the elastic force of the spring 11 causes the guide block 10 and the movable column 12 to move forward. The movement of the movable column 12 drives the clamping plate 8 to move synchronously to release the fixation of the cable. When testing cables of the same specification, place one end of the cable directly between the clamping plate 8 and the fixing seat 6, and then push the movable column 12 backward to drive the clamping plate 8 to clamp the cable. The position of the movable column 12 is fixed by the plug rod 13, which is engaged with the inner wall of the movable column 12. Cables of the same specification can be clamped quickly.
[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 cable stretch test device comprising a base (1) characterised in that: The upper outer wall of the base (1) is fixedly connected with a fixed plate (2), the upper outer wall of the base (1) is fixedly connected with a fixed seat (6), the front outer wall of the fixed seat (6) is fixedly connected with a fixed rod (9), the outer wall of the fixed rod (9) is penetratingly and slidingly connected with a moving plate (7), the inner wall of the moving plate (7) is fixedly connected with a threaded sleeve (15), the inner wall of the moving plate (7) is elastically connected with a guide block (10) through a spring (11), the outer wall of the guide block (10) is fixedly connected with a moving column (12), the rear outer wall of the moving column (12) is fixedly connected with a clamping plate (8), the front inner wall of the fixed seat (6) is rotatably connected with a screw rod (14), the upper inner wall of the moving plate (7) is clamped with a plug rod (13), the inner wall of the fixed plate (2) is provided with a protection assembly, the protection assembly is used for protection during testing, and the fixed plate (2) is provided with a testing machine (5).
2. The cable stretch test apparatus of claim 1, wherein: The protection assembly comprises a guard plate (3), the guard plate (3) is elastically connected to the inner wall of the fixed plate (2) through a torsional spring (16), and the upper side of the base (1) is fixedly connected with a stop block (4).
3. The cable stretch test apparatus of claim 1, wherein: One end of the spring (11) is fixedly connected to the front outer wall of the guide block (10), and the other end of the spring (11) is fixedly connected to the inner wall of the moving plate (7).
4. The cable stretch test apparatus of claim 1, wherein: The outer wall of the guide block (10) is slidingly connected to the inner wall of the moving plate (7).
5. The cable stretch test apparatus of claim 2, wherein: One end of the torsional spring (16) is fixedly connected to the inner wall of the fixed plate (2), and the other end of the torsional spring (16) is fixedly connected to the outer wall of the guard plate (3).
6. The cable stretch test apparatus of claim 2, wherein: The guard plate (3) is rotatably connected to the upper inner wall of the base (1).
7. The cable stretch test apparatus of claim 1, wherein: The front inner wall of the clamping plate (8) is provided with two symmetrical penetrating holes, the clamping plate (8) is slidingly connected to the outer wall of the fixed rod (9), and the diameter of the penetrating hole on the left side of the clamping plate (8) is greater than that of the screw rod (14).
8. The cable stretch test apparatus of claim 1, wherein: The outer wall of the screw rod (14) is penetratingly and threadedly connected to the inner wall of the threaded sleeve (15).