Electronic fence tension tightener

Abstract

The utility model provides an electronic fence tension tightener, and relates to the technical field of electronic fences, the electronic fence tension tightener comprises a concentric-square-shaped tightening frame and shaft holes arranged in the centers of the left end and the right end of the concentric-square-shaped tightening frame, a tightening shaft is connected in the two shaft holes, and the tightening shaft can rotate clockwise and anticlockwise in the shaft holes. And a threading notch is formed in the center of the wire tightening shaft. A novel reinforcing protection device is additionally arranged at each of the upper end and the lower end of the clip-shaped stringing frame, so that when a steel wire on the electronic fence penetrates through wire holes in the two ends of the clip-shaped stringing frame and a threading notch in a stringing shaft, the steel wire of the electronic fence certainly penetrates through the two reinforcing protection devices; and after the steel wires of the electronic fence are adjusted by the tension wire tightener, the steel wires outside the two ends of the clip-shaped wire tightening frame can be respectively clamped by the two reinforcing protection devices, so that the situation that the steel wires are in friction contact with the inner walls of the wire holes for a long time under the influence of wind power and external force to cause breakage can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of electronic fence technology, and in particular to an electronic fence tensioner. Background Technology

[0002] With the continuous development of electronic fence technology, its application in the field of security protection is becoming increasingly widespread. An electronic fence system typically consists of electronic fence wire, a controller, and an alarm. By setting up wire around the protected area, the system will sound an alarm when an object touches or damages the wire, thus achieving security monitoring of the protected area. In electronic fence systems, the tension adjustment of the wire is crucial. Appropriate tension ensures the stability and reliability of the electronic fence system, improving its protective effect. However, traditional electronic fence tension adjustment devices have many problems, such as complex operation, inaccurate tension adjustment, and a lack of effective reinforcement and protection measures.

[0003] The prior art disclosed in CN211841753U is an electronic fence tensioner, including a housing, a rotating screw, a gear, a fixing block, an elastic element, and a pin. The housing has a rectangular structure, and the rotating screw is mounted on the housing. A pin is provided at the tail end of the rotating screw for limiting. A gear is mounted on the rotating screw. The head of the fixing block contacts the gear teeth. The tail end of the fixing block is rotatably mounted on a rotating shaft, which is mounted on the housing. An elastic element is provided on the housing below the head of the fixing block, and the top of the elastic element contacts the head of the fixing block. A wire hole is opened on the rotating screw, and through holes are provided on both sides of the housing at positions corresponding to the wire hole, forming a wire tensioning channel between the through holes and the wire hole.

[0004] Current electronic fence tensioners can adjust the tension of the fence wires and lock the tensioning shaft in place using locking teeth in the locking slot, preventing rotation. However, this method presents several problems. First, the point where the wires are wrapped around the shaft is a stress concentration point, making the wires prone to breakage. Second, the wires can sway under wind or other external forces, causing prolonged contact and friction with the wire holes, which can also lead to breakage. To address these issues, this invention proposes a novel electronic fence tensioner. This tensioner, through its unique mechanical structure design, allows for easy adjustment of the wire tension and effectively locks it in place after adjustment. It also prevents breakage due to stress concentration and friction, improving the overall performance of the electronic fence system. Utility Model Content

[0005] Therefore, it is necessary to provide an electronic fence tensioner to address the problem that the steel wire of the electronic fence will sway when subjected to external forces such as wind, causing the steel wire to rub against the wire hole for a long time, which can easily lead to the breakage of the steel wire due to contact friction.

[0006] This utility model provides an electronic fence tensioner, including a spiral tensioning frame and shaft holes located inside the center of the left and right ends of the spiral tensioning frame. A tensioning shaft is connected to the two shaft holes, and the tensioning shaft can rotate clockwise and counterclockwise within the shaft holes. A wire-passing slot is provided inside the center of the tensioning shaft, and the wire-passing slot is horizontally arranged inside the center of the tensioning shaft, allowing the electronic fence steel wire to pass through normally. Wire holes are provided inside the center of both the upper and lower ends of the spiral tensioning frame, and reinforcement and protection devices are provided on the outer walls of both the upper and lower ends of the spiral tensioning frame.

[0007] In one embodiment, the reinforcement and protection device at the upper end of the loop-shaped tensioning frame includes a metal fixing plate, a loop-shaped reinforcement sleeve, a first pressure block, a wire clamping groove, and a second pressure block. The metal fixing plate is provided on the outer side of the bottom end of the loop-shaped reinforcement sleeve. The metal fixing plate can be fixed to the top end of the loop-shaped tensioning frame by welding or screws. The first pressure block is provided inside the left end of the loop-shaped reinforcement sleeve, and the second pressure block is provided inside the right end of the loop-shaped reinforcement sleeve. Both the right end of the first pressure block and the left end of the second pressure block are provided with concave wire clamping grooves. The wire clamping grooves are all arc-shaped grooves, and the diameter of the wire clamping groove is smaller than the diameter of the wire hole.

[0008] In one embodiment, the reinforcement and protection device further includes anti-detachment sliders and anti-detachment grooves. Anti-detachment grooves are symmetrically arranged inside the front and rear ends of the U-shaped reinforcement sleeve. Anti-detachment sliders are symmetrically arranged on the outer walls of the front and rear ends of the first and second pressure blocks. The anti-detachment sliders on the outer walls of the front and rear ends of the first and second pressure blocks are respectively inserted into the anti-detachment grooves inside the front and rear ends of the U-shaped reinforcement sleeve, and the anti-detachment sliders can move left and right in the anti-detachment grooves.

[0009] In one embodiment, the reinforcement and protection device further includes a first internal thread adjusting cylinder, a second internal thread adjusting cylinder, and a reinforcement locking screw. The right end of the U-shaped reinforcement sleeve is inserted and fixed with the first internal thread adjusting cylinder, and the left end of the U-shaped reinforcement sleeve is inserted and fixed with the second internal thread adjusting cylinder. Both the first internal thread adjusting cylinder and the second internal thread adjusting cylinder are threaded with reinforcement locking screws.

[0010] In one embodiment, when the reinforcing locking screws rotate, they can move left and right in the first internal thread adjusting cylinder and the second internal thread adjusting cylinder respectively through the action of the threads, and the two reinforcing locking screws can push the first pressure block to the right and the second pressure block to the left respectively.

[0011] In one embodiment, an anti-detachment ring is fixed at the center of the outer wall of the left end of the spiral tensioner, the left end of the tensioning shaft is inserted into the anti-detachment ring, and the tensioning shaft can move left and right in the anti-detachment ring. A switch knob cover is sleeved on the outside of the left end of the anti-detachment ring, and the switch knob cover can move left and right and rotate clockwise and counterclockwise outside the anti-detachment ring.

[0012] In one embodiment, a switch screw hole is provided inside the left end of the tensioning shaft, the right end of the switch screw hole is connected to the inside of the wire-passing groove, a switch screw is threaded into the switch screw hole, and the left end of the switch screw is fixedly connected to the inner wall of the left end of the switch knob cover by welding.

[0013] In one embodiment, a locking ring is provided at the center of the outer wall of the right end of the spiral tensioner, and a locking end cap is provided on the right side of the locking ring. The right end of the tensioning shaft passes through the locking ring and is fixedly connected to the locking end cap. An adjusting handle is provided on the right end of the locking end cap. The adjusting handle can drive the tensioning shaft to rotate clockwise and counterclockwise and move left and right through the locking end cap.

[0014] In one embodiment, the outer wall of the right end of the locking ring is provided with a plurality of left-leaning recessed locking grooves at equal intervals, and the outer wall of the left end of the locking end cover is provided with a plurality of locking teeth at equal intervals. The locking teeth can be fully engaged in the locking grooves, and the locking end cover cannot be rotated after the locking teeth are inserted into the locking grooves.

[0015] This invention adds a novel reinforcement and protection device to both the upper and lower ends of the loop-shaped tensioning frame. When the steel wire of the electronic fence passes through the wire holes inside both ends of the loop-shaped tensioning frame and the wire slot inside the tensioning shaft, the steel wire will inevitably pass through the two reinforcement and protection devices. After the tensioner adjusts the steel wire of the electronic fence, the two reinforcement and protection devices can clamp the steel wire outside both ends of the loop-shaped tensioning frame. This not only prevents the steel wire from breaking due to prolonged friction and contact with the inner wall of the wire hole caused by wind and external forces, but also provides a secondary locking effect on the tensioned steel wire to prevent it from loosening due to external factors during long-term use, thus ensuring that the electronic fence always maintains a stable tension. Furthermore, this reinforcement and protection device avoids the tension being concentrated at the connection point between the steel wire and the tensioning shaft. Without the reinforcement and protection device, the tension of the electronic fence is mainly borne by the connection point between the steel wire and the tensioning shaft. When subjected to high tension for extended periods, connection points are prone to wear, fatigue, or even breakage. The reinforcement and protection device distributes some of the tension to the steel wires on the outside of both ends of the loop tensioner, reducing the burden on the connection points and extending the service life of the electronic fence. Attached Figure Description

[0016] Figure 1This is a side-view three-dimensional structural diagram of an electronic fence tensioner according to the present invention;

[0017] Figure 2 This is a front view schematic diagram of the tensioner for an electronic fence according to the present invention.

[0018] Figure 3 This is a three-dimensional structural diagram of the tensioning mechanism of the tensioner of this utility model;

[0019] Figure 4 This is a side-view perspective view of the three-dimensional structure of the reinforcement and protection device of this utility model;

[0020] Figure 5 This is a top view schematic diagram of the reinforcement and protection device of this utility model.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Recurved tensioning bracket; 2. Wire hole; 3. Switch knob cover; 4. Wire threading groove; 5. Shaft hole; 6. Tensioning spool; 7. Reinforcing and protective device; 8. Locking ring; 9. Locking end cover; 10. Adjusting handle; 11. Switch screw; 12. Anti-detachment ring; 13. Switch screw hole; 14. Locking slot; 15. Locking tooth; 16. First internal thread adjusting cylinder; 17. Anti-detachment slider; 18. Anti-detachment groove; 19. Metal fixing piece; 20. Second internal thread adjusting cylinder; 21. Reinforcing locking screw; 22. Recurved reinforcing sleeve; 23. First pressure block; 24. Wire clamping groove; 25. Second pressure block. Detailed Implementation

[0023] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described clearly and completely below with reference to the accompanying drawings. Obviously, the specific details described below are only a part of the embodiments of this utility model, and this utility model can be implemented in many other embodiments different from those described herein. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0026] Please refer to Figure 1-5 This utility model provides an electronic fence tensioner, including a spiral tensioner frame 1 and shaft holes 5 located at the center of both ends of the spiral tensioner frame 1. A tensioning shaft 6 is connected to each of the two shaft holes 5, and the tensioning shaft 6 can rotate clockwise and counterclockwise within the shaft holes 5. The spiral tensioner frame 1, as the main structure, provides stable support and a mounting base. The tensioning shaft 6 is connected to the spiral tensioner frame 1 through the shaft holes 5 and can rotate clockwise and counterclockwise within the shaft holes 5 to wind and loosen the steel wire. A wire-passing slot 4 is provided at the center of the tensioning shaft 6, and the wire-passing slot 4 is horizontally positioned inside the center of the tensioning shaft 6, allowing the electronic fence steel wire to pass through normally. The design of the wire-passing slot 4 and the wire holes 2 ensures that the electronic fence steel wire can pass through smoothly. The tensioner adjusts the length and tension of the wire under the rotation of the tensioning shaft 6. The center of both the upper and lower ends of the loop-shaped tensioning frame 1 is provided with wire holes 2. An anti-detachment ring 12 is fixed at the center of the outer wall of the left end of the loop-shaped tensioning frame 1. The left end of the tensioning shaft 6 is inserted into the anti-detachment ring 12, and the tensioning shaft 6 can move left and right in the anti-detachment ring 12. A switch knob cover 3 is sleeved on the outside of the left end of the anti-detachment ring 12. The switch knob cover 3 can move left and right and rotate clockwise and counterclockwise outside the anti-detachment ring 12. A switch screw hole 13 is provided inside the left end of the tensioning shaft 6. The right end of the switch screw hole 13 is connected to the inside of the wire slot 4. A switch screw 11 is threaded into the switch screw hole 13. The left end of the switch screw 11 is fixedly connected to the inner wall of the left end of the switch knob cover 3 by welding.

[0027] like Figure 1 , Figure 2 and Figure 3As shown, a locking ring 8 is located at the center of the outer wall of the right end of the spiral-shaped wire tensioning frame 1. A locking end cap 9 is located on the right side of the locking ring 8. The right end of the tensioning shaft 6 passes through the locking ring 8 and is fixedly connected to the locking end cap 9. An adjusting handle 10 is located on the right end of the locking end cap 9. The adjusting handle 10 can drive the tensioning shaft 6 to rotate clockwise and counterclockwise and move left and right through the locking end cap 9. The function of the adjusting handle 10 is to drive the tensioning shaft 6 to rotate through the locking end cap 9. When the tensioning shaft 6 is rotated clockwise, the number of turns of the wire on the tensioning shaft 6 increases, thereby increasing the tension. When the tensioning shaft 6 is rotated counterclockwise, the number of turns of the wire decreases, and the tension decreases. This adjustment mechanism can precisely adjust the tightness and tension of the electronic fence wire according to actual needs to meet different usage scenarios and requirements. The outer wall of the right end of the locking ring 8 is equidistantly equipped with... The locking end cover 9 has multiple left-leaning recessed locking slots 14 and multiple locking teeth 15 equidistantly arranged on the outer wall of its left end. The locking teeth 15 can fully engage in the locking slots 14. After the locking teeth 15 are inserted into the locking slots 14, the locking end cover 9 cannot rotate. The locking ring 8 and the locking end cover 9 cooperate to form a locking mechanism. The locking slots 14 on the locking ring 8 and the locking teeth 15 on the locking end cover 9 engage with each other, which can lock the tensioning shaft 6 when needed to prevent it from rotating accidentally, thereby maintaining the tension of the electronic fence wire. When it is necessary to adjust the tension, the switch knob cover 3 and the switch screw 11 are used to move the switch knob cover 3 to the left, creating conditions for the locking end cover 9 to move to the right, thereby disengaging the locking teeth 15 from the locking slots 14 and unlocking the tensioning shaft 6.

[0028] like Figure 1 , Figure 2 and Figure 3As shown, when using this electronic fence tensioner, first check whether all parts of the tensioner are intact and confirm that the specifications of the electronic fence wire are compatible with the tensioner. Then, pass the electronic fence wire through the wire holes 2 at the top and bottom of the spiral tensioner 1 and the wire slot 4 in the center of the tensioner shaft 6. Next, insert the tensioner shaft 6 into the shaft holes 5 at the left and right ends of the spiral tensioner 1, ensuring that it is securely installed and that the tensioner shaft 6 can rotate smoothly. Observe whether the locking teeth 15 of the locking end cover 9 are fully inserted into the locking slots 14 of the locking ring 8. To ensure the tensioning shaft 6 is locked when no adjustment is being performed, when adjusting the tension of the electronic fence wire, hold the switch knob cover 3 and rotate it counterclockwise. This will cause the switch screw 11 to move to the left within the switch screw hole 13. Continue rotating the switch knob cover 3 until the distance it moves to the left is greater than the depth of the locking slot 14. Then, hold the adjusting handle 10 and pull the locking end cover 9 to the right. As the locking end cover 9 moves to the right, it will cause the tensioning shaft 6 to move to the right, simultaneously causing the wire to be inserted into the... The locking teeth 15 in the locking slot 14 disengage. Then, adjust the tightness and tension of the electronic fence wire as needed. If tension needs to be increased, rotate the tensioning shaft 6 clockwise by adjusting the handle 10 to make the wire wrap more times on the tensioning shaft 6. If tension needs to be decreased, rotate the tensioning shaft 6 counterclockwise to reduce the number of times the wire wraps. After the tension of the electronic fence wire is adjusted to the appropriate position, push the locking end cover 9 to the left to make the locking teeth 15 on the locking end cover 9 re-insert into the locking slot 1 on the locking ring 8. In step 4, ensure that the locking teeth 15 are fully engaged in the locking groove 14. At this time, the locking end cover 9 cannot be rotated, the tensioning shaft 6 is locked, and the tension of the electronic fence wire is fixed. Then, rotate the switch knob cover 3 in the opposite direction so that the switch screw 11 moves to the right in the switch screw hole 13 until the inner wall of the left end of the switch knob cover 3 is attached to the outer wall of the left end of the anti-detachment ring 12 to prevent the tensioning shaft 6 from moving left and right. This ensures that the locking teeth 15 are always inserted in the locking groove 14 and that the tensioning shaft 6 is always in the locked state.

[0029] like Figure 1 , Figure 4 and Figure 5As shown, the outer walls of both the upper and lower ends of the spiral wire tensioner 1 are equipped with reinforcing protection devices 7. The reinforcing protection device 7 at the upper end of the spiral wire tensioner 1 includes a metal fixing plate 19, a spiral reinforcing sleeve 22, a first pressure block 23, a wire clamping groove 24, and a second pressure block 25. The bottom end of the spiral reinforcing sleeve 22 is provided with a metal fixing plate 19, which can be fixed to the top of the spiral wire tensioner 1 by welding or screws. The left end of the spiral reinforcing sleeve 22 is provided with a first pressure block 23, and the right end of the spiral reinforcing sleeve 22 is provided with a second pressure block 25. The right end of the first pressure block 23 and the left end of the second pressure block 25 are both provided with concave wire clamping grooves 24. The wire clamping grooves 24 are all arc-shaped grooves, and the diameter of the wire clamping grooves 24 is smaller than the diameter of the wire hole 2. This allows for a tight fit with the electronic fence wire, achieving clamping of the wire. The reinforcement and protection device 7 also includes anti-detachment sliders 17 and anti-detachment grooves 18. Anti-detachment grooves 18 are symmetrically arranged inside the front and rear ends of the U-shaped reinforcement sleeve 22. Anti-detachment sliders 17 are symmetrically arranged on the outer walls of the front and rear ends of the first pressure block 23 and the second pressure block 25. The anti-detachment sliders 17 on the outer walls of the front and rear ends of the first pressure block 23 and the second pressure block 25 are respectively inserted into the anti-detachment grooves 18 inside the front and rear ends of the U-shaped reinforcement sleeve 22. The anti-detachment sliders 17 can move left and right in the anti-detachment grooves 18. The design of the anti-detachment sliders 17 being inserted into the anti-detachment grooves 18 ensures that the metal clamping block can move stably left and right during the clamping of the steel wire without shifting or falling off. The cooperation between the anti-detachment sliders 17 and the anti-detachment grooves 18 also limits the range of motion of the metal clamping block, ensuring the accuracy and reliability of the clamping operation.

[0030] like Figure 1 , Figure 4 and Figure 5As shown, the reinforcement and protection device 7 also includes a first internal thread adjusting cylinder 16, a second internal thread adjusting cylinder 20, and reinforcement locking screws 21. The right end of the U-shaped reinforcement sleeve 22 is inserted and fixed with the first internal thread adjusting cylinder 16, and the left end of the U-shaped reinforcement sleeve 22 is inserted and fixed with the second internal thread adjusting cylinder 20. Reinforcement locking screws 21 are threaded into both the first internal thread adjusting cylinder 16 and the second internal thread adjusting cylinder 20. When the reinforcement locking screws 21 rotate, they can move left and right in the first internal thread adjusting cylinder 16 and the second internal thread adjusting cylinder 20 respectively through the thread action. The two reinforcement locking screws 21 can push the first pressure block 2 to the right respectively. 3. Push the second pressure block 25 to the left. After the tensioner adjusts the tension of the electronic fence wire, the reinforcement protection device 7 is needed to reinforce and protect the exposed wire outside the loop-shaped tensioner 1. Taking the operation of one reinforcement protection device 7 as an example, rotate the second internal thread adjusting cylinder 20 on the left end and the first internal thread adjusting cylinder 16 on the right end of the loop-shaped reinforcement sleeve 22 respectively. The rotation direction is such that both reinforcement locking screws 21 move towards the center of the loop-shaped reinforcement sleeve 22. As the reinforcement locking screws 21 rotate and move, they push the first pressure block 25 to the right respectively. Push block 23 and the second pressure block 25 to the left, and continuously rotate the tightening locking screw 21 until the first pressure block 23 and the second pressure block 25 firmly clamp the electronic fence wire through the wire clamping groove 24. Finally, check whether the clamping force of the first pressure block 23 and the second pressure block 25 on the wire is appropriate. It should not be too loose, so as not to play a reinforcing role, nor too tight, so as to damage the wire. During the use of the electronic fence, the wire needs to withstand a certain tension and external force. By clamping through the reinforcement and protection device 7, the tensile strength of the wire can be increased, and the risk of the wire breaking due to force can be reduced, even in harsh environments. Under conditions such as strong winds and heavy rain, the steel wire can remain stable, improving the reliability and safety of the electronic fence. The reinforcement and protection device 7 of the electronic fence tensioner effectively improves the stability, reliability and service life of the electronic fence by clamping and reinforcing the steel wire, providing a strong guarantee for the normal operation of the electronic fence. After the tensioner adjusts the steel wire of the electronic fence, the two reinforcement and protection devices 7 clamp the steel wires on the outside of both ends of the loop tensioner 1, which can prevent the steel wire from being damaged by wind and external forces and rubbing against the inner wall of the wire hole 2 for a long time.

[0031] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0032] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications, substitutions, and improvements without departing from the concept of this utility model, and these should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the claims.

Claims

1. An electronic fence tension tightener, comprising a back type tightener frame (1) and shaft holes (5) arranged inside the center of the left and right ends of the back type tightener frame (1), a tightener shaft (6) is connected in the two shaft holes (5), the tightener shaft (6) can rotate clockwise and counterclockwise in the shaft hole (5), a threading notch (4) is arranged inside the center of the tightener shaft (6), the threading notch (4) is arranged horizontally inside the center of the tightener shaft (6), and the threading notch (4) can normally pass through the electronic fence steel wire, characterized in that, The wire hole (2) is arranged at the center of the upper and lower ends of the back type wire tightener (1), and the reinforcing protection device (7) is arranged on the outer wall of the upper and lower ends of the back type wire tightener (1). The reinforcing protection device (7) comprises a metal fixing sheet (19), a back type reinforcing sleeve (22), a first pressing block (23), a wire clamping groove (24) and a second pressing block (25). The metal fixing sheet (19) is arranged at the bottom of the outer part of the back type reinforcing sleeve (22), and the metal fixing sheet (19) can be fixed on the top end of the back type wire tightener (1) by welding or screwing. The first pressing block (23) is arranged at the left end of the inner part of the back type reinforcing sleeve (22), and the second pressing block (25) is arranged at the right end of the inner part of the back type reinforcing sleeve (22). The wire clamping groove (24) is arranged at the right end of the inner part of the first pressing block (23) and the left end of the inner part of the second pressing block (25), and the wire clamping groove (24) is an arc-shaped groove. The diameter of the wire clamping groove (24) is smaller than the diameter of the wire hole (2).

2. An electronic fence tension line tightener according to claim 1 wherein, The reinforcing protection device (7) further comprises an anti-slip block (17) and an anti-slip groove (18). The anti-slip groove (18) is arranged at the front and rear ends of the inner part of the back type reinforcing sleeve (22) in a symmetrical manner. The anti-slip block (17) is arranged on the outer wall of the front and rear ends of the first pressing block (23) and the second pressing block (25) in a symmetrical manner. The anti-slip block (17) on the outer wall of the front and rear ends of the first pressing block (23) and the second pressing block (25) is respectively inserted into the anti-slip groove (18) in the inner part of the front and rear ends of the back type reinforcing sleeve (22), and the anti-slip block (17) can move left and right in the anti-slip groove (18).

3. An electronic fence tension line tightener according to claim 2, wherein, The reinforcing protection device (7) further comprises a first inner threaded adjusting cylinder (16), a second inner threaded adjusting cylinder (20) and a reinforcing locking screw (21). The first inner threaded adjusting cylinder (16) is inserted and fixed at the right end of the back type reinforcing sleeve (22), and the second inner threaded adjusting cylinder (20) is inserted and fixed at the left end of the back type reinforcing sleeve (22). The reinforcing locking screw (21) is threadedly inserted into the first inner threaded adjusting cylinder (16) and the second inner threaded adjusting cylinder (20).

4. An electronic fence tension line tightener according to claim 3, wherein, When the reinforcing locking screw (21) rotates, it can move left and right in the first inner threaded adjusting cylinder (16) and the second inner threaded adjusting cylinder (20) through the thread action. The two reinforcing locking screws (21) can respectively push the first pressing block (23) to the right and the second pressing block (25) to the left.

5. An electronic fence tension line tightener according to claim 1 wherein, The anti-slip ring (12) is fixed at the center of the outer wall of the left end of the back type wire tightener (1). The wire shaft (6) is inserted into the anti-slip ring (12), and the wire shaft (6) can move left and right in the anti-slip ring (12). The switch knob cover (3) is sleeved on the outer part of the left end of the anti-slip ring (12). The switch knob cover (3) can move left and right and rotate clockwise and counterclockwise on the outer part of the anti-slip ring (12).

6. An electronic fence tension line tightener according to claim 5 wherein, The left end of the tight line shaft (6) is internally provided with a switch screw hole (13), the right end of the switch screw hole (13) is in communication with the inside of the threading slot (4), a switch screw rod (11) is threadedly inserted into the switch screw hole (13), and the left end of the switch screw rod (11) is fixedly connected to the inner wall of the left end of the switch knob cover (3) by welding.

7. An electronic fence tension line tightener according to claim 1 wherein, The right end of the back type tight line frame (1) is provided with a locking ring (8) on the center of the outer wall, the right side of the locking ring (8) is provided with a locking end cover (9), the right end of the tight line shaft (6) passes through the locking ring (8) and is fixedly connected with the locking end cover (9), the right end of the locking end cover (9) is provided with an adjusting handle (10), and the adjusting handle (10) can drive the tight line shaft (6) to rotate clockwise and counterclockwise and move left and right through the locking end cover (9).

8. An electronic fence tension line tightener according to claim 7, wherein, The right end of the locking ring (8) is provided with a plurality of left inclined recessed locking clamping grooves (14) at equal intervals on the outer wall, the left end of the locking end cover (9) is provided with a plurality of locking clamping teeth (15) at equal intervals on the outer wall, the locking clamping teeth (15) can be completely meshed in the locking clamping grooves (14), and the locking end cover (9) cannot be rotated after the locking clamping teeth (15) are inserted into the inside of the locking clamping grooves (14).

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