Low-voltage line tightener

Abstract

The utility model relates to a low-voltage line tightener, which relates to the technical field of electric power tighteners and comprises a tightening frame shell. The connecting plate is arranged on the tightening frame shell and is used for limiting the tightening cable; the tightening shaft is rotationally arranged on the connecting plate, a threading hole is formed in the tightening shaft, a cable penetrates through the threading hole, and the tightening shaft is rotated to tighten the cable; the limiting assembly is arranged on the connecting plate, is in coaxial transmission connection with the tightening shaft and is used for driving the tightening shaft to rotate and preventing the tightening shaft from rotating; the limiting assembly comprises a connecting shaft which is rotationally arranged on the connecting plate and is in coaxial transmission connection with the tightening shaft; the rotating limiting gear is fixedly arranged on the connecting shaft; the fixing frame is arranged on the tightening frame shell; one end of the limiting piece is rotationally arranged on the fixing frame, the other end of the limiting piece abuts against the rotation limiting gear and is used for limiting rotation of the rotation limiting gear, the tightening shaft is driven to rotate through the limiting assembly, rotation of the tightening shaft is avoided, and it is ensured that the cable is kept in a stable state after being tightened.

Description

Technical Field

[0001] This application relates to the field of power line tensioner technology, and more particularly to a low-voltage line tensioner. Background Technology

[0002] A low-voltage line tensioner is a specialized tool used to tighten and secure low-voltage overhead insulated lines. During the installation of low-voltage overhead lines, the tensioner effectively tightens slack conductors to meet the specified tension requirements, ensuring the normal operation and electrical performance of the line. It provides reliable fixing points for the conductors and prevents them from swaying, shifting, or falling off due to factors such as wind or their own weight during operation, thereby ensuring the stability and safety of the line.

[0003] Currently, a Chinese utility model patent application with the announcement date of July 14, 2020, and announcement number CN 211018188U, provides a low-pressure wire tensioner, including a frame-shaped bracket. A winding shaft is rotatably connected inside the frame-shaped bracket. A through hole is opened in the middle of the winding shaft. A wire inlet is opened on one side of the frame-shaped bracket, and a wire outlet is opened on the other side of the frame-shaped bracket. One end of the winding shaft that passes through the frame-shaped bracket is connected to a connector, and the connector is connected to a handle. It is simple to operate, convenient to use, has a simple structure, and is very easy to replace.

[0004] Low-voltage cable tensioners in related technologies lack limiting components to control the cable tension after tightening. This can lead to loosening of the cable after tightening, potentially causing it to come into contact with surrounding objects or people, resulting in leakage and electric shock. This poses a serious threat to personal safety. Furthermore, the increased contact resistance and line loss can cause a drop in voltage at the end of the line, affecting the normal operation of electrical equipment and reducing its efficiency and lifespan.

[0005] Therefore, it is necessary to provide a low-voltage line tensioner to solve the above problems. Utility Model Content

[0006] This application provides a low-voltage line tensioner to improve the technical problem in related technologies where there is a lack of limiting components after the cable is tightened, which may cause the cable to loosen after tightening and thus lead to electric shock accidents.

[0007] This application provides a low-voltage line tensioner, comprising:

[0008] The housing of the tensioning frame is used to support the parts;

[0009] A connecting plate, disposed on the housing of the tightening frame, is used to limit the tightening of the cable;

[0010] A tightening shaft is rotatably mounted on the connecting plate. The tightening shaft has a wire hole for the cable to pass through. Rotating the tightening shaft tightens the cable.

[0011] A limiting component is provided on the connecting plate and is coaxially connected to the tightening shaft for driving the tightening shaft to rotate while preventing the tightening shaft from rotating back.

[0012] The limiting component includes...

[0013] A connecting shaft is rotatably mounted on the connecting plate and is coaxially connected to the tightening shaft for transmission.

[0014] Rotate the limiting gear, which is fixedly mounted on the connecting shaft;

[0015] A fixing bracket is mounted on the outer shell of the tightening bracket;

[0016] The limiting component has one end rotatably mounted on the fixed frame and the other end abutting against the rotating limiting gear, which is used to limit the rotation of the rotating limiting gear.

[0017] The technical solution described above in this application embodiment has at least the following technical effects: When the user uses the low-voltage line tensioner to tighten the cable, by passing the cable through the through hole on the tightening shaft and rotating the rotating limit gear, the tightening shaft is driven to rotate while the limit member slides on the rotating limit gear. When the upper limit of tightening is reached, the rotating limit gear is released. When the cable wants to drive the tightening shaft to rotate back, the limit member abuts against the rotating limit gear, restricting the rotation of the rotating limit gear.

[0018] The low-voltage line tensioner provided in this application embodiment can drive the tensioning shaft to rotate through the limiting component while preventing the tensioning shaft from rotating back, ensuring that the cable remains stable after tightening and will not loosen due to the reverse rotation of the tensioning shaft. This reduces the risk of safety accidents such as electric shock and short circuit caused by loose cables and protects the safety of personnel and equipment.

[0019] In some embodiments, a detachable handle is movably disposed on the connecting shaft, a snap-fit ​​groove is formed on the connecting shaft, a snap-fit ​​block is fixedly disposed on the detachable handle, and the detachable handle is movably disposed on the connecting shaft through the snap-fit ​​block and the snap-fit ​​groove.

[0020] In some embodiments, a cable inlet plate is movably disposed on the housing of the tensioning frame, the cable inlet plate having a cable inlet hole, and a cable outlet plate is movably disposed on the housing of the tensioning frame, the cable outlet plate having a cable outlet hole.

[0021] In some embodiments, both the inlet plate and the outlet plate are provided with telescopic components to expand the internal volume of the tightening frame housing while reducing the probability of cable loosening.

[0022] The telescopic component includes,

[0023] A guide post passes through the housing of the tensioning frame and is disposed on the inlet plate and the outlet plate;

[0024] An abutment plate is disposed on the end of the guide post away from the inlet plate and the outlet plate;

[0025] The telescopic spring has one end abutting against the abutment plate and the other end abutting against the inner wall of the tensioning frame housing.

[0026] In some embodiments, the abutment plate is the same size as the inner wall of the tightening frame housing, and is used to provide stable guidance during the extension and retraction of the guide column.

[0027] In some embodiments, the inner walls of the inlet hole, outlet hole, and through hole are all provided with guide protective sleeves to protect the cable insulation layer. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural schematic diagram of a low-voltage line tensioner provided in an embodiment of this application;

[0029] Figure 2 This is an exploded view of the limiting component provided in the embodiments of this application;

[0030] Figure 3 This is a cross-sectional structural schematic diagram of a low-voltage line tensioner provided in an embodiment of this application;

[0031] The following are the labeling elements in the figure:

[0032] 1. Tightening frame housing; 11. Cable inlet plate; 111. Cable inlet hole; 12. Cable outlet plate; 121. Cable outlet hole; 13. Tightening shaft; 131. Cable threading hole; 14. Connecting plate; 2. Limiting assembly; 21. Connecting shaft; 22. Rotational limiting gear; 23. Fixing frame; 24. Limiting component; 25. Detachable handle; 251. Snap-fit ​​block; 252. Snap-fit ​​groove; 3. Telescopic component; 31. Guide post; 32. Telescopic spring; 33. Abutment plate; 4. Guide protective sleeve. Detailed Implementation Method 2

[0034] Based on this, in order to improve the technical problem in the related technology that there is no limiting component for the cable after tightening during the cable tightening process, which may cause the cable to loosen after tightening and thus cause electric shock accidents, the embodiments of this application provide the following solution.

[0035] Please refer to the following: Figures 1 to 3This application provides a low-voltage line tensioner, which includes a tensioning frame housing 1 for supporting components; a connecting plate 14 disposed on the tensioning frame housing 1 for limiting the tensioned cable; a tensioning shaft 13 rotatably disposed on the connecting plate 14, the tensioning shaft 13 having a cable through hole 131 for the cable to pass through the cable ...

[0036] In some embodiments, please refer to the following: Figures 1 to 2 The limiting component 2 includes a connecting shaft 21, which is rotatably mounted on the connecting plate 14 and coaxially connected to the tightening shaft 13; a rotating limiting gear 22, which is fixedly mounted on the connecting shaft 21; a fixing frame 23, which is mounted on the tightening frame housing 1; and a limiting member 24, one end of which is rotatably mounted on the fixing frame 23 and the other end of which abuts against the rotating limiting gear 22 to limit the rotation of the rotating limiting gear 22. A detachable handle 25 is movably mounted on the connecting shaft 21, and a snap-fit ​​groove 252 is provided on the connecting shaft 21. A snap-fit ​​block 251 is fixedly mounted on the detachable handle 25, and the detachable handle 25 is movably mounted on the connecting shaft 21 through the snap-fit ​​block 251 and the snap-fit ​​groove 252.

[0037] With this configuration, when the user tightens the cable using the low-voltage line tensioner, the cable is passed through the threading hole 131 on the tightening shaft 13, and the snap-fit ​​block 251 on the detachable handle 25 is snapped into the snap-fit ​​groove 252 on the connecting shaft 21. Rotating the snap-fit ​​handle drives the connecting shaft 21 to rotate, which in turn drives the rotating limit gear 22 to rotate. While the tightening shaft 13 rotates to tighten the cable, the limiting member 24 slides on the rotating limit gear 22. When the upper limit of tightening is reached, the rotating limit gear 22 is released. When the cable tries to drive the tightening shaft 13 to rotate back, the limiting member 24 abuts against the rotating limit gear 22, restricting the rotation of the rotating limit gear 22. Thus, after the cable is tightened, the limiting member 24 can effectively abut against the rotating limiting gear 22, restricting its rotation and ensuring that the cable always remains tightened and will not loosen due to the reverse rotation of the tightening shaft 13. This reduces the risk of electric shock, short circuits, and other safety accidents that may be caused by loose cable, ensuring the safety of personnel and equipment. It also prevents the tightening shaft 13 from rotating, ensuring that the cable maintains stable tension after tightening, preventing malfunctions and dangers caused by insufficient tension leading to loosening of the line, and improving the safety of line operation. Effective tightening and limiting can ensure a tight connection between the conductors, maintain good contact at the conductor connection, thereby reducing contact resistance, reducing losses during power transmission, and improving power transmission efficiency.

[0038] In some embodiments, please refer to the following: Figure 3The tightening frame housing 1 is also movably equipped with an inlet plate 11, which has an inlet hole 111. The tightening frame housing 1 is also movably equipped with an outlet plate 12, which has an outlet hole 121. Both the inlet plate 11 and the outlet plate 12 are equipped with telescopic components 3, which are used to expand the internal volume of the tightening frame housing 1 while reducing the probability of cable loosening. The telescopic component 3 includes a guide post 31, which passes through the tightening frame housing 1 and is positioned on the inlet plate 11 and the outlet plate. 12; Abutment plate 33 is set on the end of the guide post 31 away from the inlet plate 11 and the outlet plate 12; a telescopic spring 32 is abutted on the abutment plate 33 at one end and abutted on the inner wall of the tightening frame housing 1 at the other end. The abutment plate 33 is the same size as the inner wall of the tightening frame housing 1 and is used to stabilize and guide the guide post 31 during the extension and retraction process. The inner walls of the inlet hole 111, outlet hole 121 and through hole 131 are all provided with guide protective sleeves 4 to protect the cable insulation layer.

[0039] With this setup, the cable is first passed sequentially through the inlet hole 111 on the inlet plate 11, the through hole 131 on the tightening shaft 13, and the outlet hole 121 on the outlet plate 12. Rotating the detachable handle 25 tightens the cable. When the cable is collected on the tightening shaft 13, if too much cable is collected, it will abut against the inlet plate 11 and the outlet plate 12. The cable will extend outward against the inlet plate 11 and the outlet plate 12. At the same time, the inlet plate 11 and the outlet plate 12 drive the guide post 31 to extend outward, while the abutment plate 33 compresses the telescopic spring 32, causing the inlet plate 11 and the outlet plate 12 to press the cable tightly to prevent it from loosening. At the same time, the abutment plate 33 plays a stabilizing guiding role during the extension and retraction of the guide post 31. The inner walls of the inlet hole 111, the outlet hole 121, and the through hole 131 are all equipped with guide protective sleeves 4 to protect the cable insulation layer. Thus, the inlet plate 11 and outlet plate 12 press the cable together, ensuring stable tension after tightening. This prevents line faults and dangers caused by loose cables, improving line operation safety. After the cable is pressed together, the connection between the conductors is tighter, ensuring good contact at the connection point, reducing contact resistance, reducing power transmission loss, and improving power transmission efficiency. The guide protective sleeve 4 on the inner wall of the inlet hole 111, outlet hole 121, and through hole 131 reduces friction damage during cable insertion, effectively protecting the cable insulation layer and preventing faults such as leakage and short circuits caused by insulation layer damage. This extends the cable's service life and ensures safe line operation. The abutment plate 33 plays a stable guiding role during the extension and retraction of the guide post 31, ensuring accurate positioning and smooth operation of the inlet plate 11 and outlet plate 12 when pressing the cable. This avoids cable deviation or uneven tightening caused by structural instability, improving the overall stability and reliability of the tensioner.

[0040] The implementation principle of a low-voltage line tensioner according to this application embodiment is as follows: When the user uses the low-voltage line tensioner to tighten the cable, the cable is passed through the inlet hole 111 on the inlet plate 11, the through hole 131 on the tightening shaft 13, and the outlet hole 121 on the outlet plate 12. The user engages the snap-fit ​​block 251 on the detachable handle 25 with the snap-fit ​​groove 252 on the connecting shaft 21. Rotating the snap-fit ​​handle rotates the connecting shaft 21, which in turn rotates the rotation limit gear 22. This causes the tightening shaft 13 to rotate while tightening the cable. At the same time, the limiting member 24 slides on the rotation limit gear 22. When the tightening limit is reached, the rotation limit gear 22 is released. When the cable wants to move the tightening shaft 13... During the rotation, the limiting member 24 abuts against the rotating limiting gear 22, restricting the rotation of the rotating limiting gear 22. When the cable is collected onto the tightening shaft 13, if too much cable is collected, it abuts against the inlet plate 11 and the outlet plate 12. The cable extends outward against the inlet plate 11 and the outlet plate 12. At the same time, the inlet plate 11 and the outlet plate 12 drive the guide post 31 to extend outward, while the abutment plate 33 compresses the telescopic spring 32, causing the inlet plate 11 and the outlet plate 12 to press the cable tightly to prevent it from loosening. At the same time, the abutment plate 33 plays a stabilizing guiding role during the extension and retraction of the guide post 31. The inner walls of the inlet hole 111, the outlet hole 121 and the through hole 131 are all equipped with guide protective sleeves 4 to protect the cable insulation layer.

[0041] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A low-voltage line tensioner, characterized in that, include: The tensioning frame housing (1) is used to support the parts; A connecting plate (14) is provided on the housing (1) of the tightening frame and is used to limit the tightened cable; A tightening shaft (13) is rotatably mounted on the connecting plate (14). A wire hole (131) is provided on the tightening shaft (13) for the cable to pass through the wire hole (131). The tightening shaft (13) is rotated to tighten the cable. The limiting component (2) is set on the connecting plate (14) and is coaxially connected to the tightening shaft (13) for driving the tightening shaft (13) to rotate while preventing the tightening shaft (13) from rotating back; The limiting component (2) includes, The connecting shaft (21) is rotatably mounted on the connecting plate (14) and is coaxially connected to the tightening shaft (13); Rotate the limiting gear (22), which is fixedly mounted on the connecting shaft (21); A fixing bracket (23) is provided on the outer shell (1) of the tightening bracket; The limiting member (24) is rotatably mounted on the fixed frame (23) at one end and abuts against the rotating limiting gear (22) at the other end, and is used to limit the rotation of the rotating limiting gear (22).

2. A low-voltage line tensioner according to claim 1, characterized in that: A detachable handle (25) is movably provided on the connecting shaft (21). A snap-fit ​​groove (252) is provided on the connecting shaft (21). A snap-fit ​​block (251) is fixedly provided on the detachable handle (25). The detachable handle (25) is movably provided on the connecting shaft (21) through the snap-fit ​​block (251) and the snap-fit ​​groove (252).

3. A low-voltage line tensioner according to claim 2, characterized in that: The tensioning frame housing (1) is also movably provided with an inlet plate (11), which has an inlet hole (111). The tensioning frame housing (1) is also movably provided with an outlet plate (12), which has an outlet hole (121).

4. A low-voltage line tensioner according to claim 3, characterized in that: Both the inlet plate (11) and the outlet plate (12) are equipped with telescopic components (3) to expand the internal volume of the tightening frame shell (1) while reducing the probability of the cable loosening. The telescopic component (3) includes, A guide post (31) passes through the housing (1) of the tensioning frame and is disposed on the inlet plate (11) and the outlet plate (12); A contact plate (33) is disposed on one end of the guide post (31) away from the inlet plate (11) and the outlet plate (12); The telescopic spring (32) has one end abutting against the abutting plate (33) and the other end abutting against the inner wall of the tightening frame housing (1).

5. A low-voltage line tensioner according to claim 4, characterized in that: The abutment plate (33) is the same size as the inner wall of the tightening frame shell (1) and is used to stabilize and guide the guide column (31) during its extension and retraction.

6. A low-voltage line tensioner according to claim 5, characterized in that: The inner walls of the inlet hole (111), outlet hole (121) and through hole (131) are all provided with guide protective sleeves (4) to protect the cable insulation layer.

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