Wire tightener for electric power facility installation

Abstract

The utility model discloses a tightener for electric power facility installation, which is characterized in that a rotating shaft is rotatably connected in a mechanism box, two ratchet wheels are fixedly connected on the rotating shaft, a rotating handle is rotatably connected on the inner side wall of the mechanism box, the rotating shaft penetrates through and rotates the rotating handle, a fixed block is fixedly connected between the inner walls of the rotating handle, and the ratchet wheels are fixedly connected on the fixed block. Two sliding grooves are formed in the lower end of the fixing block, and the long plate slides in the sliding grooves. The device is reasonable in structure, the rotating handle is pushed to enable the ratchet wheel to rotate anticlockwise, ratchet wheel teeth make contact with the clamping block to drive the clamping block to rotate clockwise, and then the clamping block resets under the action of the torsional spring. After the rotating handle is loosened, ratchet teeth make contact with the lower end of the clamping block, the clamping block prevents the ratchet from rotating reversely, it is guaranteed that the device does not rotate accidentally without external force, and system safety is enhanced. In addition, the rotating handle and the ratchet wheel are independently installed on the rotating shaft and do not interfere with each other, and the rotating handle is prevented from rotating to hurt operators.

Description

TECHNICAL FIELD

[0001] The utility model relates to a wire tightener for power facility installation. BACKGROUND

[0002] In the power system, when erecting or maintaining high-voltage overhead line, it is very important to ensure the proper tension of the wire. If the wire is too loose, it will result in excessive sag and swing, which may cause collision between the wires and lead to short circuit. On the contrary, if the wire is too tight, it may lead to wire breakage or falling down of the pole. Therefore, adjusting to the proper tightness is the key to ensure the safe and stable operation of the power line.

[0003] Through search, a wire tightener with the patent number CN203690808U first puts the high-voltage cable into the clamping part of the triangular wire clamp and clamps it reliably, then hooks the J-shaped hook at the pole cross arm for fixation, pushes the handle forward, according to the principle of gear meshing, the handle drives the gear to rotate counterclockwise, which drives the rack to move backward in the groove bottom of the concave fixing frame, thereby driving the cable to be tightened, and vice versa. However, when the cable is tightened, if the pushing force on the handle is removed, the gear will reverse due to the tension of the cable, causing the handle to rotate spontaneously. This sudden movement not only damages the mechanical structure of the wire tightener, but more importantly, it poses a direct threat to the operator, such as pinching the fingers, hitting the body, etc., especially in the high-altitude working environment, this risk is even more deadly. SUMMARY

[0004] The utility model aims at solving the shortcomings in the prior art and provides a wire tightener for power facility installation.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A wire tightener for power facility installation, comprising a mechanism box and a long plate, a rotating shaft is rotatably connected in the mechanism box, two ratchets are fixedly connected on the rotating shaft, a rotating handle is rotatably connected on the inner wall of the mechanism box, the rotating shaft penetrates the rotating handle, a fixed block is fixedly connected between the inner walls of the rotating handle, two sliding grooves are formed in the lower end of the fixed block, the long plate slides in the sliding grooves, a U-shaped pull rod is fixedly connected on the upper end of the long plate, the U-shaped pull rod penetrates the sliding fixed block, a reset mechanism for resetting the long plate is installed in the sliding groove, a steel rope is wound on the rotating shaft, the steel rope penetrates the mechanism box, a second fixed hook is fixedly connected on the end of the steel rope away from the rotating shaft, a traction mechanism for traction of the cable is installed on the side wall of the mechanism box, and a locking mechanism for locking the ratchet is installed in the mechanism box.

[0007] Preferably, the reset mechanism comprises a spring, one end of the spring is fixedly installed on the inner wall of the sliding groove, and the other end of the spring is fixedly installed on the long plate.

[0008] Preferably, the traction mechanism comprises a rotating rod and a first fixed hook, the rotating rod is rotatably installed on the side wall of the mechanism box, and the first fixed hook is fixedly installed on the end of the rotating rod away from the side wall of the mechanism box.

[0009] Preferably, the locking mechanism comprises a long rod, a limiting plate and a clamping block, the long rod is rotatably installed in the mechanism box and penetrates the mechanism box, the clamping block is fixedly installed on the long rod, the limiting plate is fixedly installed on the side wall of the mechanism box, the limiting plate is in contact with the clamping block, a rebound mechanism for rebounding the clamping block is installed on the long rod, and a rotating mechanism for rotating the long rod is installed on the mechanism box.

[0010] Preferably, the rebound mechanism comprises a torsion spring, one end of the torsion spring is fixedly installed on the side wall of the clamping block, and the other end of the torsion spring is fixedly installed on the inner wall of the mechanism box.

[0011] Preferably, the rotating mechanism comprises a hand wheel, and the hand wheel is fixedly installed on the end of the long rod away from the side wall of the mechanism box.

[0012] The utility model has the following beneficial effects:

[0013] 1. By pushing the rotating handle forward, the ratchet rotates counterclockwise, the teeth of the ratchet contact the clamping block to make the clamping block rotate clockwise, and the clamping block will reset under the action of the torsion spring. When the rotating handle is released and no pushing force is applied to it, the teeth of the ratchet will contact the lower end of the clamping block, thereby blocking the rotation of the ratchet through the clamping block, effectively preventing accidental rotation of the device under no external force, and improving the safety of the entire system. At the same time, the rotating handle and the ratchet are relatively independently rotatably installed on the rotating shaft and do not affect each other, preventing spontaneous rotation of the rotating handle from causing injury to the operator.

[0014] 2. Pulling the U-shaped pull rod upward makes the U-shaped pull rod pull the long plate upward, and rotating the hand wheel makes the hand wheel drive the clamping block to rotate through the long rod, so that the rotation of the ratchet is not blocked by external force. At this time, the length of the steel rope released can be adjusted according to the distance between the actual fixed point and the cable, so that the device can be flexibly adjusted according to the needs of the actual use scene, and is suitable for installation environments with different distances. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A structure diagram of a line tightener for power facility installation is provided for the utility model;

[0016] Figure 2 A mechanism box cross-sectional structure diagram is provided for the utility model;

[0017] Figure 3 A fixed block cross-sectional structure diagram is provided for the utility model;

[0018] Figure 4 The utility model provides a structure schematic drawing of ratchet wheel, steel rope and rotating shaft etc.

[0019] Figure 5 For Figure 2 The structure amplification schematic drawing of A in the middle;

[0020] Figure 6 The utility model provides a structure schematic drawing of the arresting mechanism.

[0021] In the drawing: 1 mechanism box, 2 rotating handle, 3 U-shaped pull rod, 4 fixed block, 5 ratchet wheel, 6 rotating rod, 7 first fixed hook, 8 steel rope, 9 second fixed hook, 10 long plate, 11 hand wheel, 12 long rod, 13 rotating shaft, 14 spring, 15 clamping block, 16 torsional spring, 17 sliding slot, 18 limiting plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0023] Referring to Figures 1-6 A line tightener for power facility installation includes mechanism box 1 and long plate 10, rotating shaft 13 is rotatably connected in mechanism box 1, two ratchet wheels 5 are fixedly connected on rotating shaft 13, rotating handle 2 is rotatably connected on the inner side wall of mechanism box 1, rotating shaft 13 penetrates rotating handle 2, it needs to be explained that, as shown in the figure, Figure 1 Push rotating handle 2 forward, so that long plate 10 drives ratchet wheel 5 to rotate counterclockwise, and then ratchet wheel 5 winds steel rope 8, to achieve the effect of tightening the cable, when pushing rotating handle 2 backward, the side of long plate 10 opposite to ratchet wheel 5 is in contact, and the parts of long plate 10 and the teeth of ratchet wheel 5 in contact are all treated with rounded corners, to reduce the friction between them, so that long plate 10 can be extruded into sliding slot 17, under the action of spring 14, long plate 10 will reset, and then when pushing rotating handle 2 forward after pushing it backward, the cable can be tightened again, so reciprocate, push rotating handle 2 different times according to the actual scene.

[0024] Fixed block 4 is fixedly connected between the inner walls of rotating handle 2, two sliding slots 17 are formed in the lower end of fixed block 4, long plate 10 is slidably connected in sliding slot 17, it needs to be explained that, as shown in the figure, Figure 3 A small part of long plate 10 is in sliding slot 17 initially, so that the side wall of sliding slot 17 can limit long plate 10, to prevent long plate 10 from deviating when moving, and then avoid the situation that long plate 10 cannot be moved into sliding slot 17.

[0025] The long plate 10 is fixedly connected with a U-shaped pull rod 3 at the upper end, the U-shaped pull rod 3 penetrates through a sliding block 4, a reset mechanism for resetting the long plate 10 is installed in a sliding groove 17, the reset mechanism comprises a spring 14, one end of the spring 14 is fixedly installed on the inner wall of the sliding groove 17, and the other end of the spring 14 is fixedly installed on the long plate 10.

[0026] The steel wire 8 is wound on the rotating shaft 13, penetrates through the mechanism box 1, and is fixedly connected with a second fixed hook 9 at the end away from the rotating shaft 13, a traction mechanism for traction of the cable is installed on the side wall of the mechanism box 1, the traction mechanism comprises a rotating rod 6 and a first fixed hook 7, the rotating rod 6 is rotatably installed on the side wall of the mechanism box 1, and the first fixed hook 7 is fixedly installed at the end of the rotating rod 6 away from the side wall of the mechanism box 1.

[0027] A clamping mechanism for clamping the ratchet wheel 5 is installed in the mechanism box 1. The clamping mechanism comprises a long rod 12, a limiting plate 18 and a clamping block 15, the long rod 12 is rotatably installed in the mechanism box 1 and penetrates through the mechanism box 1, the clamping block 15 is fixedly installed on the long rod 12, the limiting plate 18 is fixedly installed on the side wall of the mechanism box 1, and the limiting plate 18 is in abutment with the clamping block 15. It should be noted that, as shown in the figure, the limiting plate 18 prevents the clamping block 15 from counterclockwise rotation, so that the clamping block 15 can abut against the teeth of the ratchet wheel 5, and the ratchet wheel 5 is prevented from rotating due to the tension of the steel wire 8 on the ratchet wheel 5. Figure 6

[0028] A rebound mechanism for rebounding the clamping block 15 is installed on the long rod 12, the rebound mechanism comprises a torsion spring 16, one end of the torsion spring 16 is fixedly installed on the side wall of the clamping block 15, and the other end of the torsion spring 16 is fixedly installed on the inner wall of the mechanism box 1.

[0029] A rotating mechanism for rotating the long rod 12 is installed on the mechanism box 1. The rotating mechanism comprises a hand wheel 11, and the hand wheel 11 is fixedly installed at the end of the long rod 12 away from the side wall of the mechanism box 1. It should be noted that when the tension of the cable is too large, the hand wheel 11 can be rotated, so that the hand wheel 11 drives the clamping block 15 to rotate, and the U-shaped pull rod 3 is pulled upward at the same time, so that the long plate 10 is above the teeth of the ratchet wheel 5, and the ratchet wheel 5 is contacted and clamped, at this time, the ratchet wheel 5 can rotate, and the tension of the cable is adjusted conveniently.

[0030] ​The utility model discloses, rotating hand wheel 11, make hand wheel 11 drive long rod 12 rotate, long rod 12 drive the rotation of clamping block 15, make clamping block 15 not with the tooth of ratchet wheel 5 contact, pull up U -shaped pull rod 3 upwards, make U -shaped pull rod 3 drive long board 10 move to the inside of slide groove 17, and the tooth of long board 10 and ratchet wheel 5 also do not contact, at this time can according to the distance between fixed point and cable and carry out the take -up of steel rope 8. The one end of cable is fixed on first fixed hook 7, and second fixed hook 9 is fixedly installed on fixed point, and the handle 2 is pushed forward, and the handle 2 makes ratchet wheel 5 rotate counterclockwise through long board 10, and steel rope 8 is reeled, and cable is tightened, and when pushing the handle 2 back, because the part of long board 10 and the tooth of ratchet wheel 5 contact is rounded at this time, so the tooth of ratchet wheel 5 will extrude long board 10 into slide groove 17, at this time spring 14 is compressed, when long board 10 does not contact the tooth on ratchet wheel 5, spring 14 resets, and then drives long board 10 to move to the initial position, so as to tighten cable for the next time forward push handle 2.

[0031] The tooth of ratchet wheel 5 constantly hits the upper end of clamping block 15 in the process of counterclockwise rotation, makes clamping block 15 rotate, and under the action of torsion spring 16, clamping block 15 will return to the horizontal position again, and then make the tooth of ratchet wheel 5 contact with the lower end of clamping block 15, and limiting plate 18 limits the rotation direction of clamping block 15, so that clamping block 15 can prevent ratchet wheel 5 from rotating back.

[0032] The above, only for the preferred specific implementation mode of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art in the utility model discloses the technical range of the utility model, according to the technical scheme and the utility model concept of the utility model, equivalent replacement or change, all should be covered in the protection scope of the utility model.

Claims

1. A wire tightener for electric power installation, comprising a mechanism case (1) and a long plate (10), characterized in that, The mechanism box (1) is rotatably connected with a rotating shaft (13), the rotating shaft (13) is fixedly connected with two ratchets (5), the inner wall of the mechanism box (1) is rotatably connected with a rotating handle (2), the rotating shaft (13) penetrates the rotating handle (2), the inner wall of the rotating handle (2) is fixedly connected with a fixed block (4), two sliding grooves (17) are formed in the lower end of the fixed block (4), a long plate (10) slides in the sliding grooves (17), the upper end of the long plate (10) is fixedly connected with a U-shaped pull rod (3), the U-shaped pull rod (3) penetrates the sliding fixed block (4), a reset mechanism for resetting the long plate (10) is installed in the sliding grooves (17), the rotating shaft (13) is wound with a steel wire (8), the steel wire (8) penetrates the mechanism box (1), the end of the steel wire (8) away from the rotating shaft (13) is fixedly connected with a second fixed hook (9), a traction mechanism for traction cable is installed on the side wall of the mechanism box (1), and a locking mechanism for locking the ratchet (5) is installed in the mechanism box (1).

2. A line tensioner for electrical utility installation according to claim 1, wherein The reset mechanism comprises a spring (14), one end of the spring (14) is fixedly installed on the inner wall of the sliding groove (17), and the other end of the spring (14) is fixedly installed on the long plate (10).

3. The line tensioner for electrical utility installation according to Claim 1, wherein The traction mechanism comprises a rotating rod (6) and a first fixed hook (7), the rotating rod (6) is rotatably installed on the side wall of the mechanism box (1), and the first fixed hook (7) is fixedly installed on the end of the rotating rod (6) away from the side wall of the mechanism box (1).

4. The line tensioner for electrical utility installation of claim 1, wherein The locking mechanism comprises a long rod (12), a limiting plate (18) and a clamping block (15), the long rod (12) is rotatably installed in the mechanism box (1), and the long rod (12) penetrates the mechanism box (1), the clamping block (15) is fixedly installed on the long rod (12), the limiting plate (18) is fixedly installed on the side wall of the mechanism box (1), the limiting plate (18) is attached to the clamping block (15), a rebound mechanism for rebounding the clamping block (15) is installed on the long rod (12), and a rotating mechanism for rotating the long rod (12) is installed on the mechanism box (1).

5. A line tensioner for electrical utility installation according to claim 4, wherein The rebound mechanism comprises a torsion spring (16), one end of the torsion spring (16) is fixedly installed on the side wall of the clamping block (15), and the other end of the torsion spring (16) is fixedly installed on the inner wall of the mechanism box (1).

6. A line tensioner for electrical utility installation according to claim 4, wherein The rotating mechanism comprises a hand wheel (11), and the hand wheel (11) is fixedly installed on the end of the long rod (12) away from the side wall of the mechanism box (1).

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